Refactor ConnectionForm and Checkbox component for improved functionality and UI

- Updated ConnectionForm to utilize a Checkbox component for managing the "keep server running" setting, enhancing user interaction.
- Refactored Checkbox component to use a button element for better accessibility and visual feedback.
- Streamlined import statements and improved code organization across multiple components for better readability.

app/src/App.tsx

@@ -1,18 +1,17 @@
 import { useEffect, useState } from 'react';
 import voiceboxLogo from '@/assets/voicebox-logo.png';
-import { AudioPlayer } from '@/components/AudioPlayer/AudioPlayer';
+import { AppFrame } from '@/components/AppFrame/AppFrame';
+import { AudioTab } from '@/components/AudioTab/AudioTab';
+import { MainEditor } from '@/components/MainEditor/MainEditor';
+import { ModelsTab } from '@/components/ModelsTab/ModelsTab';
+import { ServerTab } from '@/components/ServerTab/ServerTab';
 // import { GenerationForm } from '@/components/Generation/GenerationForm';
-import { FloatingGenerateBox } from '@/components/Generation/FloatingGenerateBox';
-import { HistoryTable } from '@/components/History/HistoryTable';
-import { ConnectionForm } from '@/components/ServerSettings/ConnectionForm';
-import { ModelManagement } from '@/components/ServerSettings/ModelManagement';
-import { ServerStatus } from '@/components/ServerSettings/ServerStatus';
-import { UpdateStatus } from '@/components/ServerSettings/UpdateStatus';
 import ShinyText from '@/components/ShinyText';
 import { Sidebar } from '@/components/Sidebar';
 import { TitleBarDragRegion } from '@/components/TitleBarDragRegion';
 import { Toaster } from '@/components/ui/toaster';
-import { ProfileList } from '@/components/VoiceProfiles/ProfileList';
+import { VoicesTab } from '@/components/VoicesTab/VoicesTab';
+import { TOP_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import { useModelDownloadToast } from '@/lib/hooks/useModelDownloadToast';
 import { MODEL_DISPLAY_NAMES, useRestoreActiveTasks } from '@/lib/hooks/useRestoreActiveTasks';
 import {
@@ -22,7 +21,7 @@ import {
   setupWindowCloseHandler,
   startServer,
 } from '@/lib/tauri';
-import { usePlayerStore } from '@/stores/playerStore';
+import { cn } from '@/lib/utils/cn';
 import { useServerStore } from '@/stores/serverStore';
 
 // Track if server is starting to prevent duplicate starts
@@ -55,7 +54,6 @@ function App() {
   const [activeTab, setActiveTab] = useState('main');
   const [serverReady, setServerReady] = useState(false);
   const [loadingMessageIndex, setLoadingMessageIndex] = useState(0);
-  const audioUrl = usePlayerStore((state) => state.audioUrl);
 
   // Monitor active downloads/generations and show toasts for them
   const activeDownloads = useRestoreActiveTasks();
@@ -142,7 +140,12 @@ function App() {
   // Show loading screen while server is starting in Tauri
   if (isTauri() && !serverReady) {
     return (
-      <div className="min-h-screen bg-background flex items-center justify-center pt-12">
+      <div
+        className={cn(
+          'min-h-screen bg-background flex items-center justify-center',
+          TOP_SAFE_AREA_PADDING,
+        )}
+      >
         <TitleBarDragRegion />
         <div className="text-center space-y-6">
           <div className="flex justify-center relative">
@@ -170,65 +173,21 @@ function App() {
   }
 
   return (
-    <div className="h-screen bg-background flex flex-col overflow-hidden pt-12">
+    <AppFrame>
-      <TitleBarDragRegion />
       <div className="flex flex-1 min-h-0 overflow-hidden">
         <Sidebar activeTab={activeTab} onTabChange={setActiveTab} isMacOS={isMacOS()} />
 
         <main className="flex-1 ml-20 overflow-hidden flex flex-col">
           <div className="container mx-auto px-8 max-w-[1800px] h-full overflow-hidden flex flex-col">
-            {activeTab === 'settings' ? (
+            {activeTab === 'main' && <MainEditor />}
-              <div className="space-y-4 overflow-y-auto flex flex-col">
+            {activeTab === 'voices' && <VoicesTab />}
-                <div className="grid gap-4 md:grid-cols-2">
+            {activeTab === 'audio' && <AudioTab />}
-                  <ConnectionForm />
+            {activeTab === 'server' && <ServerTab />}
-                  <ServerStatus />
+            {activeTab === 'models' && <ModelsTab />}
-                </div>
-                {isTauri() && <UpdateStatus />}
-                <ModelManagement />
-                <div className="py-8 text-center text-sm text-muted-foreground">
-                  Created by{' '}
-                  <a
-                    href="https://github.com/jamiepine"
-                    target="_blank"
-                    rel="noopener noreferrer"
-                    className="text-accent hover:underline"
-                  >
-                    Jamie Pine
-                  </a>
-                </div>
-              </div>
-            ) : (
-              // Main view: Profiles top left, Generator bottom left, History right
-              <div className="grid grid-cols-1 lg:grid-cols-2 gap-6 h-full min-h-0 overflow-hidden relative">
-                {/* Left Column */}
-                <div className="flex flex-col gap-6 min-h-0 overflow-y-auto pb-32">
-                  {/* Profiles - Top Left */}
-                  <div className="shrink-0 flex flex-col">
-                    <ProfileList />
-                  </div>
-
-                  {/* Generator - Bottom Left */}
-                  {/* <div className="shrink-0">
-                    <GenerationForm />
-                  </div> */}
-                </div>
-
-                {/* Right Column - History */}
-                <div className="flex flex-col min-h-0 overflow-hidden">
-                  <HistoryTable />
-                </div>
-
-                {/* Floating Generate Box */}
-                <FloatingGenerateBox isPlayerOpen={!!audioUrl} />
-              </div>
-            )}
           </div>
         </main>
       </div>
 
-      {/* Audio Player - always visible except on settings */}
-      {activeTab !== 'settings' && <AudioPlayer />}
-
       {/* Show download toasts for any active downloads (from anywhere) */}
       {activeDownloads.map((download) => {
         const displayName = MODEL_DISPLAY_NAMES[download.model_name] || download.model_name;
@@ -242,7 +201,7 @@ function App() {
       })}
 
       <Toaster />
-    </div>
+    </AppFrame>
   );
 }
 

app/src/components/AppFrame/AppFrame.tsx

@@ -0,0 +1,18 @@
+import { TitleBarDragRegion } from '@/components/TitleBarDragRegion';
+import { AudioPlayer } from '@/components/AudioPlayer/AudioPlayer';
+import { TOP_SAFE_AREA_PADDING } from '@/lib/constants/ui';
+import { cn } from '@/lib/utils/cn';
+
+interface AppFrameProps {
+  children: React.ReactNode;
+}
+
+export function AppFrame({ children }: AppFrameProps) {
+  return (
+    <div className={cn('h-screen bg-background flex flex-col overflow-hidden', TOP_SAFE_AREA_PADDING)}>
+      <TitleBarDragRegion />
+      {children}
+      <AudioPlayer />
+    </div>
+  );
+}

app/src/components/AudioPlayer/AudioPlayer.tsx

@@ -1,8 +1,12 @@
-import { Pause, Play, Repeat, Volume2, VolumeX } from 'lucide-react';
+import { useQuery } from '@tanstack/react-query';
-import { useEffect, useRef, useState } from 'react';
+import { invoke } from '@tauri-apps/api/core';
+import { Pause, Play, Repeat, Volume2, VolumeX, X } from 'lucide-react';
+import { useEffect, useMemo, useRef, useState } from 'react';
 import WaveSurfer from 'wavesurfer.js';
 import { Button } from '@/components/ui/button';
 import { Slider } from '@/components/ui/slider';
+import { apiClient } from '@/lib/api/client';
+import { isTauri } from '@/lib/tauri';
 import { formatAudioDuration } from '@/lib/utils/audio';
 import { usePlayerStore } from '@/stores/playerStore';
 
@@ -10,6 +14,7 @@ export function AudioPlayer() {
   const {
     audioUrl,
     audioId,
+    profileId,
     title,
     isPlaying,
     currentTime,
@@ -23,13 +28,58 @@ export function AudioPlayer() {
     setVolume,
     toggleLoop,
     clearRestartFlag,
+    reset,
   } = usePlayerStore();
 
+  // Check if profile has assigned channels (for native audio routing)
+  const { data: profileChannels } = useQuery({
+    queryKey: ['profile-channels', profileId],
+    queryFn: () => {
+      if (!profileId) return { channel_ids: [] };
+      return apiClient.getProfileChannels(profileId);
+    },
+    enabled: !!profileId && isTauri(),
+  });
+
+  const { data: channels } = useQuery({
+    queryKey: ['channels'],
+    queryFn: () => apiClient.listChannels(),
+    enabled: !!profileChannels && profileChannels.channel_ids.length > 0,
+  });
+
+  // Determine if we should use native playback
+  const useNativePlayback = useMemo(() => {
+    console.log('useNativePlayback memo:', {
+      isTauri: isTauri(),
+      profileId,
+      profileChannels,
+      channels,
+    });
+
+    if (!isTauri() || !profileChannels || !channels) {
+      console.log('useNativePlayback: false - missing requirements');
+      return false;
+    }
+
+    const assignedChannels = channels.filter((ch) => profileChannels.channel_ids.includes(ch.id));
+
+    console.log('Assigned channels:', assignedChannels);
+
+    // Use native playback if any assigned channel has non-default devices
+    const shouldUseNative = assignedChannels.some(
+      (ch) => ch.device_ids.length > 0 && !ch.is_default,
+    );
+
+    console.log('useNativePlayback result:', shouldUseNative);
+    return shouldUseNative;
+  }, [profileChannels, channels, profileId]);
+
   const waveformRef = useRef<HTMLDivElement>(null);
   const wavesurferRef = useRef<WaveSurfer | null>(null);
   const loadingRef = useRef(false);
   const previousAudioIdRef = useRef<string | null>(null);
   const hasInitializedRef = useRef(false);
+  const isUsingNativePlaybackRef = useRef(false);
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
@@ -122,7 +172,7 @@ export function AudioPlayer() {
       });
 
       // Update store when duration is loaded
-      wavesurfer.on('ready', () => {
+      wavesurfer.on('ready', async () => {
         const dur = wavesurfer.getDuration();
         setDuration(dur);
         loadingRef.current = false;
@@ -136,14 +186,188 @@ export function AudioPlayer() {
         wavesurfer.setVolume(currentVolume);
 
         // Get the underlying audio element and ensure it's not muted
+        // (unless we're using native playback, which will be set later)
         const mediaElement = wavesurfer.getMediaElement();
-        if (mediaElement) {
+        if (mediaElement && !isUsingNativePlaybackRef.current) {
           mediaElement.volume = currentVolume;
           mediaElement.muted = false;
           console.log('Audio element volume:', mediaElement.volume, 'muted:', mediaElement.muted);
         }
 
-        // Auto-play when ready
+        // Auto-play when ready - check if we should use native playback
+        // Get current values from the store and queries at runtime (not captured closure values)
+        const currentAudioUrl = usePlayerStore.getState().audioUrl;
+        const currentProfileId = usePlayerStore.getState().profileId;
+
+        console.log('Auto-play check - capturing runtime values...');
+
+        // Fetch profile channels at runtime (not using captured value)
+        let runtimeProfileChannels = null;
+        let runtimeChannels = null;
+
+        if (isTauri() && currentProfileId) {
+          try {
+            runtimeProfileChannels = await apiClient.getProfileChannels(currentProfileId);
+            console.log('Runtime profileChannels:', runtimeProfileChannels);
+
+            if (runtimeProfileChannels && runtimeProfileChannels.channel_ids.length > 0) {
+              runtimeChannels = await apiClient.listChannels();
+              console.log('Runtime channels:', runtimeChannels);
+            }
+          } catch (error) {
+            console.error('Failed to fetch runtime channel data:', error);
+          }
+        }
+
+        console.log('Auto-play check:', {
+          isTauri: isTauri(),
+          currentAudioUrl,
+          currentProfileId,
+          hasProfileChannels: !!runtimeProfileChannels,
+          hasChannels: !!runtimeChannels,
+        });
+
+        if (
+          isTauri() &&
+          currentAudioUrl &&
+          currentProfileId &&
+          runtimeProfileChannels &&
+          runtimeChannels
+        ) {
+          console.log('Attempting native audio playback...');
+
+          // Stop any existing native playback first
+          if (isUsingNativePlaybackRef.current) {
+            try {
+              await invoke('stop_audio_playback');
+              console.log('Stopped existing native playback before starting new one');
+            } catch (error) {
+              console.error('Failed to stop existing playback:', error);
+            }
+          }
+
+          try {
+            // Collect all device IDs from assigned channels
+            const assignedChannels = runtimeChannels.filter((ch: any) =>
+              runtimeProfileChannels.channel_ids.includes(ch.id),
+            );
+            console.log('Assigned channels for playback:', assignedChannels);
+
+            // Check if any assigned channel has non-default devices
+            const shouldUseNative = assignedChannels.some(
+              (ch: any) => ch.device_ids.length > 0 && !ch.is_default,
+            );
+            console.log('Should use native playback:', shouldUseNative);
+
+            if (!shouldUseNative) {
+              console.log('No custom devices assigned, falling back to WaveSurfer');
+              // Reset native playback flag and unmute WaveSurfer
+              isUsingNativePlaybackRef.current = false;
+              const mediaElement = wavesurfer.getMediaElement();
+              if (mediaElement) {
+                const currentVolume = usePlayerStore.getState().volume;
+                mediaElement.volume = currentVolume;
+                mediaElement.muted = false;
+                console.log(
+                  'WaveSurfer unmuted for normal playback - volume:',
+                  mediaElement.volume,
+                  'muted:',
+                  mediaElement.muted,
+                );
+              }
+            } else {
+              const deviceIds = assignedChannels.flatMap((ch: any) => ch.device_ids);
+              console.log('Device IDs to play to:', deviceIds);
+
+              if (deviceIds.length > 0) {
+                console.log('Fetching audio data from:', currentAudioUrl);
+                // Fetch audio data
+                const response = await fetch(currentAudioUrl);
+                const audioData = new Uint8Array(await response.arrayBuffer());
+                console.log('Audio data size:', audioData.length);
+
+                // Play via native audio
+                console.log('Invoking play_audio_to_devices...');
+                try {
+                  const result = await invoke('play_audio_to_devices', {
+                    audioData: Array.from(audioData),
+                    deviceIds: deviceIds,
+                  });
+                  console.log('play_audio_to_devices completed successfully, result:', result);
+
+                  // Mark that we're using native playback
+                  isUsingNativePlaybackRef.current = true;
+
+                  // Mute WaveSurfer's audio element to prevent UI audio output
+                  // Keep WaveSurfer running for visualization
+                  const mediaElement = wavesurfer.getMediaElement();
+                  if (mediaElement) {
+                    mediaElement.volume = 0;
+                    mediaElement.muted = true;
+                    console.log(
+                      'WaveSurfer muted for native playback - volume:',
+                      mediaElement.volume,
+                      'muted:',
+                      mediaElement.muted,
+                    );
+                  }
+
+                  // Start WaveSurfer playback for visualization (muted)
+                  wavesurfer.play().catch((error) => {
+                    console.error('Failed to start WaveSurfer visualization:', error);
+                  });
+
+                  setIsPlaying(true);
+                  console.log('Auto-playing via native audio routing - SUCCESS');
+                  return;
+                } catch (invokeError) {
+                  console.error('play_audio_to_devices invoke failed:', invokeError);
+                  throw invokeError;
+                }
+              } else {
+                console.log('No device IDs found, falling back to WaveSurfer');
+              }
+            }
+          } catch (error) {
+            console.error(
+              'Native playback failed during auto-play, falling back to WaveSurfer:',
+              error,
+            );
+            // Reset native playback flag and unmute WaveSurfer
+            isUsingNativePlaybackRef.current = false;
+            const mediaElement = wavesurfer.getMediaElement();
+            if (mediaElement) {
+              const currentVolume = usePlayerStore.getState().volume;
+              mediaElement.volume = currentVolume;
+              mediaElement.muted = false;
+              console.log(
+                'WaveSurfer unmuted after native playback failure - volume:',
+                mediaElement.volume,
+                'muted:',
+                mediaElement.muted,
+              );
+            }
+            // Fall through to WaveSurfer playback
+          }
+        } else {
+          console.log('Not using native playback, using WaveSurfer');
+          // Reset native playback flag and unmute WaveSurfer
+          isUsingNativePlaybackRef.current = false;
+          const mediaElement = wavesurfer.getMediaElement();
+          if (mediaElement) {
+            const currentVolume = usePlayerStore.getState().volume;
+            mediaElement.volume = currentVolume;
+            mediaElement.muted = false;
+            console.log(
+              'WaveSurfer unmuted for normal playback - volume:',
+              mediaElement.volume,
+              'muted:',
+              mediaElement.muted,
+            );
+          }
+        }
+
+        // Standard WaveSurfer auto-play
         // Use a small delay to ensure audio element is fully ready
         setTimeout(() => {
           wavesurfer.play().catch((error) => {
@@ -156,13 +380,27 @@ export function AudioPlayer() {
       // Handle play/pause
       wavesurfer.on('play', () => {
         setIsPlaying(true);
-        // Ensure audio element is not muted when playing
+        // Ensure audio element volume is set correctly
         const mediaElement = wavesurfer.getMediaElement();
         if (mediaElement) {
-          mediaElement.muted = false;
+          // Double-check: if using native playback, keep WaveSurfer muted
+          // Otherwise, ensure it's unmuted
+          if (isUsingNativePlaybackRef.current) {
+            mediaElement.volume = 0;
+            mediaElement.muted = true;
+            console.log('Playing (native mode) - WaveSurfer muted for visualization only');
+          } else {
+            // Ensure WaveSurfer is unmuted for normal playback
             const currentVolume = usePlayerStore.getState().volume;
             mediaElement.volume = currentVolume;
-          console.log('Playing - volume:', mediaElement.volume, 'muted:', mediaElement.muted);
+            mediaElement.muted = false;
+            console.log(
+              'Playing (normal mode) - volume:',
+              mediaElement.volume,
+              'muted:',
+              mediaElement.muted,
+            );
+          }
         }
       });
       wavesurfer.on('pause', () => setIsPlaying(false));
@@ -268,10 +506,35 @@ export function AudioPlayer() {
         setDuration(0);
         setCurrentTime(0);
         setError(null);
+        // Reset native playback flag
+        isUsingNativePlaybackRef.current = false;
       }
       return;
     }
 
+    // Stop native playback if it was active
+    if (isUsingNativePlaybackRef.current && isTauri()) {
+      (async () => {
+        try {
+          await invoke('stop_audio_playback');
+          console.log('Stopped native audio playback');
+        } catch (error) {
+          console.error('Failed to stop native playback:', error);
+        }
+      })();
+    }
+
+    // Reset native playback flag when loading new audio
+    // Also unmute WaveSurfer if it was muted
+    if (isUsingNativePlaybackRef.current) {
+      const mediaElement = wavesurfer.getMediaElement();
+      if (mediaElement) {
+        mediaElement.muted = false;
+        mediaElement.volume = usePlayerStore.getState().volume;
+      }
+    }
+    isUsingNativePlaybackRef.current = false;
+
     // CRITICAL: Force stop any current playback and cancel any pending loads
     // This must happen BEFORE any early returns
     console.log('Audio URL changed to:', audioUrl);
@@ -352,11 +615,18 @@ export function AudioPlayer() {
       // Also ensure the underlying audio element volume is set
       const mediaElement = wavesurferRef.current.getMediaElement();
       if (mediaElement) {
+        // If using native playback, keep WaveSurfer muted regardless of volume setting
+        if (isUsingNativePlaybackRef.current) {
+          mediaElement.volume = 0;
+          mediaElement.muted = true;
+          console.log('Volume sync: Using native playback, keeping WaveSurfer muted');
+        } else {
           mediaElement.volume = volume;
           mediaElement.muted = volume === 0;
           console.log('Volume synced:', volume, 'muted:', mediaElement.muted);
         }
       }
+    }
   }, [volume]);
 
   // Mark as initialized when audio is ready, reset when audioId changes
@@ -395,7 +665,9 @@ export function AudioPlayer() {
 
   // Handle loop - WaveSurfer handles this via the 'finish' event
 
-  const handlePlayPause = () => {
+  const handlePlayPause = async () => {
+    // Standard WaveSurfer playback (works for both normal and native playback modes)
+    // When using native playback, WaveSurfer is muted but still controls visualization
     if (!wavesurferRef.current) {
       console.error('WaveSurfer not initialized');
       return;
@@ -408,9 +680,86 @@ export function AudioPlayer() {
       return;
     }
 
+    // If using native playback
+    if (useNativePlayback && audioUrl && profileChannels && channels) {
+      if (isPlaying) {
+        // Pause: stop native playback and pause WaveSurfer visualization
+        try {
+          await invoke('stop_audio_playback');
+          console.log('Stopped native audio playback');
+        } catch (error) {
+          console.error('Failed to stop native playback:', error);
+        }
+        wavesurferRef.current.pause();
+        return;
+      }
+
+      // Play: trigger native playback
+      try {
+        // Stop any existing native playback first
+        try {
+          await invoke('stop_audio_playback');
+        } catch (_error) {
+          // Ignore errors when stopping (might not be playing)
+          console.log('No existing playback to stop');
+        }
+
+        // Collect all device IDs from assigned channels
+        const assignedChannels = channels.filter((ch) =>
+          profileChannels.channel_ids.includes(ch.id),
+        );
+        const deviceIds = assignedChannels.flatMap((ch) => ch.device_ids);
+
+        if (deviceIds.length > 0) {
+          // Fetch audio data
+          const response = await fetch(audioUrl);
+          const audioData = new Uint8Array(await response.arrayBuffer());
+
+          // Play via native audio
+          await invoke('play_audio_to_devices', {
+            audioData: Array.from(audioData),
+            deviceIds: deviceIds,
+          });
+
+          // Mark that we're using native playback
+          isUsingNativePlaybackRef.current = true;
+
+          // Mute WaveSurfer and start it for visualization
+          const mediaElement = wavesurferRef.current.getMediaElement();
+          if (mediaElement) {
+            mediaElement.volume = 0;
+            mediaElement.muted = true;
+          }
+
+          // Start WaveSurfer for visualization (muted)
+          wavesurferRef.current.play().catch((error) => {
+            console.error('Failed to start WaveSurfer visualization:', error);
+            setIsPlaying(false);
+            setError(`Playback error: ${error instanceof Error ? error.message : String(error)}`);
+          });
+
+          return;
+        }
+      } catch (error) {
+        console.error('Native playback failed, falling back to WaveSurfer:', error);
+        // Fall through to WaveSurfer playback
+        isUsingNativePlaybackRef.current = false;
+      }
+    }
+
+    // Standard WaveSurfer playback (or fallback from native playback failure)
     if (wavesurferRef.current.isPlaying()) {
       wavesurferRef.current.pause();
     } else {
+      // Ensure WaveSurfer is not muted if not using native playback
+      if (!isUsingNativePlaybackRef.current) {
+        const mediaElement = wavesurferRef.current.getMediaElement();
+        if (mediaElement) {
+          mediaElement.muted = false;
+          mediaElement.volume = volume;
+        }
+      }
+
       wavesurferRef.current.play().catch((error) => {
         console.error('Failed to play:', error);
         setIsPlaying(false);
@@ -429,6 +778,22 @@ export function AudioPlayer() {
     setVolume(value[0] / 100);
   };
 
+  const handleClose = () => {
+    // Stop any native playback
+    if (isUsingNativePlaybackRef.current && isTauri()) {
+      invoke('stop_audio_playback').catch((error) => {
+        console.error('Failed to stop native playback:', error);
+      });
+    }
+    // Stop WaveSurfer
+    if (wavesurferRef.current) {
+      wavesurferRef.current.pause();
+      wavesurferRef.current.seekTo(0);
+    }
+    // Reset player state
+    reset();
+  };
+
   // Don't render if no audio
   if (!audioUrl) {
     return null;
@@ -509,6 +874,17 @@ export function AudioPlayer() {
               className="flex-1"
             />
           </div>
+
+          {/* Close Button */}
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={handleClose}
+            className="shrink-0"
+            title="Close player"
+          >
+            <X className="h-5 w-5" />
+          </Button>
         </div>
       </div>
     </div>

app/src/components/AudioTab/AudioTab.tsx

@@ -0,0 +1,672 @@
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { invoke } from '@tauri-apps/api/core';
+import { Check, CheckCircle2, Edit, Plus, Speaker, Trash2 } from 'lucide-react';
+import { useState } from 'react';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { apiClient } from '@/lib/api/client';
+import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
+import { isTauri } from '@/lib/tauri';
+import { cn } from '@/lib/utils/cn';
+import { usePlayerStore } from '@/stores/playerStore';
+
+interface AudioDevice {
+  id: string;
+  name: string;
+  is_default: boolean;
+}
+
+export function AudioTab() {
+  const [createDialogOpen, setCreateDialogOpen] = useState(false);
+  const [editingChannel, setEditingChannel] = useState<string | null>(null);
+  const [selectedChannelId, setSelectedChannelId] = useState<string | null>(null);
+  const queryClient = useQueryClient();
+  const audioUrl = usePlayerStore((state) => state.audioUrl);
+  const isPlayerVisible = !!audioUrl;
+
+  const { data: channels, isLoading: channelsLoading } = useQuery({
+    queryKey: ['channels'],
+    queryFn: () => apiClient.listChannels(),
+  });
+
+  const { data: devices, isLoading: devicesLoading } = useQuery({
+    queryKey: ['audio-devices'],
+    queryFn: async () => {
+      if (!isTauri()) {
+        return [];
+      }
+      try {
+        const result = await invoke<AudioDevice[]>('list_audio_output_devices');
+        return result;
+      } catch (error) {
+        console.error('Failed to list audio devices:', error);
+        return [];
+      }
+    },
+    enabled: isTauri(),
+  });
+
+  const { data: profiles } = useQuery({
+    queryKey: ['profiles'],
+    queryFn: () => apiClient.listProfiles(),
+  });
+
+  const createChannel = useMutation({
+    mutationFn: (data: { name: string; device_ids: string[] }) => apiClient.createChannel(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['channels'] });
+      setCreateDialogOpen(false);
+    },
+  });
+
+  const updateChannel = useMutation({
+    mutationFn: ({
+      channelId,
+      data,
+    }: {
+      channelId: string;
+      data: { name?: string; device_ids?: string[] };
+    }) => apiClient.updateChannel(channelId, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['channels'] });
+      queryClient.invalidateQueries({ queryKey: ['profile-channels'] });
+      setEditingChannel(null);
+    },
+  });
+
+  const deleteChannel = useMutation({
+    mutationFn: (channelId: string) => apiClient.deleteChannel(channelId),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['channels'] });
+      queryClient.invalidateQueries({ queryKey: ['profile-channels'] });
+    },
+  });
+
+  const { data: channelVoices } = useQuery({
+    queryKey: ['channel-voices', editingChannel],
+    queryFn: async () => {
+      if (!editingChannel) return { profile_ids: [] };
+      return apiClient.getChannelVoices(editingChannel);
+    },
+    enabled: !!editingChannel,
+  });
+
+  const setChannelVoices = useMutation({
+    mutationFn: ({ channelId, profileIds }: { channelId: string; profileIds: string[] }) =>
+      apiClient.setChannelVoices(channelId, profileIds),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['channel-voices'] });
+      queryClient.invalidateQueries({ queryKey: ['profile-channels'] });
+    },
+  });
+
+  if (channelsLoading || devicesLoading) {
+    return (
+      <div className="flex items-center justify-center h-full">
+        <div className="text-muted-foreground">Loading...</div>
+      </div>
+    );
+  }
+
+  const allChannels = channels || [];
+  const allDevices = devices || [];
+  const selectedChannel = selectedChannelId
+    ? allChannels.find((c) => c.id === selectedChannelId)
+    : null;
+
+  return (
+    <div className="h-full flex flex-col">
+      <div className="flex items-center justify-between mb-6 shrink-0">
+        <h2 className="text-2xl font-bold">Audio Channels</h2>
+        <Button onClick={() => setCreateDialogOpen(true)}>
+          <Plus className="h-4 w-4 mr-2" />
+          New Channel
+        </Button>
+      </div>
+
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6 h-full min-h-0">
+        {/* Left Column - Channels */}
+        <div
+          className={cn(
+            'flex flex-col min-h-0 overflow-y-auto',
+            isPlayerVisible && BOTTOM_SAFE_AREA_PADDING,
+          )}
+        >
+          {allChannels.length === 0 ? (
+            <div className="flex flex-col items-center justify-center py-12 border-2 border-dashed border-muted rounded-md">
+              <Speaker className="h-12 w-12 text-muted-foreground mb-4" />
+              <p className="text-muted-foreground mb-4">
+                No audio channels yet. Create your first channel to route voices to specific
+                devices.
+              </p>
+              <Button onClick={() => setCreateDialogOpen(true)}>
+                <Plus className="h-4 w-4 mr-2" />
+                Create Channel
+              </Button>
+            </div>
+          ) : (
+            <div className="space-y-3 p-2">
+              {allChannels.map((channel) => {
+                const isSelected = selectedChannelId === channel.id;
+                return (
+                  <button
+                    key={channel.id}
+                    type="button"
+                    className={cn(
+                      'group border rounded-lg p-4 transition-colors cursor-pointer text-left w-full',
+                      isSelected && 'ring-2 ring-primary bg-primary/5 border-primary',
+                    )}
+                    onClick={() => setSelectedChannelId(isSelected ? null : channel.id)}
+                  >
+                    <div className="flex items-start justify-between gap-4">
+                      <div className="flex-1 min-w-0">
+                        <div className="flex items-center gap-2 mb-3">
+                          <div className="h-8 w-8 rounded-lg bg-muted flex items-center justify-center shrink-0">
+                            <Speaker className="h-4 w-4 text-muted-foreground" />
+                          </div>
+                          <div className="flex items-center gap-2 min-w-0">
+                            <h3 className="font-semibold text-base truncate">{channel.name}</h3>
+                          </div>
+                        </div>
+
+                        <div className="space-y-2.5 ml-10">
+                          <div>
+                            <div className="text-xs font-medium text-muted-foreground mb-1">
+                              Output Devices
+                            </div>
+                            <div className="flex flex-wrap gap-1.5">
+                              {channel.device_ids.length > 0
+                                ? channel.device_ids.map((deviceId) => {
+                                    const device = allDevices.find((d) => d.id === deviceId);
+                                    return (
+                                      <Badge
+                                        key={deviceId}
+                                        variant="outline"
+                                        className="text-xs font-normal"
+                                      >
+                                        {device?.name || deviceId}
+                                      </Badge>
+                                    );
+                                  })
+                                : (() => {
+                                    const defaultDevice = allDevices.find((d) => d.is_default);
+                                    return defaultDevice ? (
+                                      <Badge variant="outline" className="text-xs font-normal">
+                                        {defaultDevice.name}
+                                      </Badge>
+                                    ) : null;
+                                  })()}
+                            </div>
+                          </div>
+
+                          <div>
+                            <div className="text-xs font-medium text-muted-foreground mb-1">
+                              Assigned Voices
+                            </div>
+                            <ChannelVoicesList channelId={channel.id} />
+                          </div>
+                        </div>
+                      </div>
+
+                      {!channel.is_default && (
+                        <div className="flex gap-1 shrink-0 opacity-0 group-hover:opacity-100 transition-opacity">
+                          <Button
+                            variant="ghost"
+                            size="sm"
+                            className="h-8 w-8 p-0"
+                            onClick={(e) => {
+                              e.stopPropagation();
+                              setEditingChannel(channel.id);
+                            }}
+                          >
+                            <Edit className="h-4 w-4" />
+                          </Button>
+                          <Button
+                            variant="ghost"
+                            size="sm"
+                            className="h-8 w-8 p-0"
+                            onClick={(e) => {
+                              e.stopPropagation();
+                              if (confirm('Delete this channel?')) {
+                                deleteChannel.mutate(channel.id);
+                              }
+                            }}
+                          >
+                            <Trash2 className="h-4 w-4" />
+                          </Button>
+                        </div>
+                      )}
+                    </div>
+                  </button>
+                );
+              })}
+            </div>
+          )}
+        </div>
+
+        {/* Right Column - Available Devices */}
+        <div
+          className={cn(
+            'flex flex-col min-h-0 overflow-y-auto',
+            isPlayerVisible && BOTTOM_SAFE_AREA_PADDING,
+          )}
+        >
+          <div className="shrink-0 mb-4">
+            <h3 className="text-lg font-semibold">Available Devices</h3>
+            <p className="text-sm text-muted-foreground mt-1">
+              {selectedChannelId
+                ? selectedChannel?.is_default
+                  ? 'Default channel uses system default device'
+                  : 'Click devices to add or remove them from the selected channel'
+                : 'Select a channel to assign devices'}
+            </p>
+          </div>
+          {allDevices.length > 0 ? (
+            <div className="space-y-2">
+              {allDevices.map((device) => {
+                const isConnected =
+                  selectedChannelId &&
+                  selectedChannel &&
+                  (selectedChannel.device_ids.length === 0
+                    ? device.is_default
+                    : selectedChannel.device_ids.includes(device.id));
+                const canToggle =
+                  selectedChannelId && selectedChannel && !selectedChannel.is_default;
+
+                const handleDeviceClick = () => {
+                  if (!canToggle || !selectedChannel) return;
+
+                  const currentDeviceIds = selectedChannel.device_ids;
+                  const newDeviceIds = isConnected
+                    ? currentDeviceIds.filter((id) => id !== device.id)
+                    : [...currentDeviceIds, device.id];
+
+                  updateChannel.mutate({
+                    channelId: selectedChannelId,
+                    data: { device_ids: newDeviceIds },
+                  });
+                };
+
+                return (
+                  <button
+                    key={device.id}
+                    type="button"
+                    onClick={handleDeviceClick}
+                    disabled={!canToggle}
+                    className={cn(
+                      'flex items-center gap-2 text-sm p-3 rounded-lg border transition-colors text-left w-full',
+                      isConnected
+                        ? 'bg-primary/10 border-primary ring-1 ring-primary/20'
+                        : 'hover:bg-muted/50',
+                      !canToggle && 'cursor-default opacity-60',
+                      canToggle && 'cursor-pointer',
+                    )}
+                  >
+                    {canToggle ? (
+                      <div
+                        className={cn(
+                          'h-4 w-4 rounded border-2 flex items-center justify-center shrink-0',
+                          isConnected ? 'bg-accent border-accent' : 'border-muted-foreground/30',
+                        )}
+                      >
+                        {isConnected && <Check className="h-3 w-3 text-accent-foreground" />}
+                      </div>
+                    ) : device.is_default ? (
+                      <CheckCircle2 className="h-4 w-4 text-primary shrink-0" />
+                    ) : null}
+                    <span className={cn('truncate flex-1', device.is_default && 'font-medium')}>
+                      {device.name}
+                    </span>
+                  </button>
+                );
+              })}
+            </div>
+          ) : (
+            <div className="flex flex-col items-center justify-center py-12 border-2 border-dashed border-muted rounded-md">
+              <CheckCircle2 className="h-12 w-12 text-muted-foreground mb-4" />
+              <p className="text-muted-foreground text-center">
+                {isTauri() ? 'No audio devices found' : 'Audio device selection requires Tauri'}
+              </p>
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Create Channel Dialog */}
+      <CreateChannelDialog
+        open={createDialogOpen}
+        onOpenChange={setCreateDialogOpen}
+        devices={devices || []}
+        onCreate={(name, deviceIds) => {
+          createChannel.mutate({ name, device_ids: deviceIds });
+        }}
+      />
+
+      {/* Edit Channel Dialog */}
+      {editingChannel &&
+        (() => {
+          const channel = channels?.find((c) => c.id === editingChannel);
+          return channel ? (
+            <EditChannelDialog
+              open={!!editingChannel}
+              onOpenChange={(open) => !open && setEditingChannel(null)}
+              channel={channel}
+              devices={devices || []}
+              profiles={profiles || []}
+              channelVoices={channelVoices?.profile_ids || []}
+              onUpdate={(name, deviceIds) => {
+                updateChannel.mutate({
+                  channelId: editingChannel,
+                  data: { name, device_ids: deviceIds },
+                });
+              }}
+              onSetVoices={(profileIds) => {
+                setChannelVoices.mutate({
+                  channelId: editingChannel,
+                  profileIds,
+                });
+              }}
+            />
+          ) : null;
+        })()}
+    </div>
+  );
+}
+
+function ChannelVoicesList({ channelId }: { channelId: string }) {
+  const { data: voices } = useQuery({
+    queryKey: ['channel-voices', channelId],
+    queryFn: () => apiClient.getChannelVoices(channelId),
+  });
+
+  const { data: profiles } = useQuery({
+    queryKey: ['profiles'],
+    queryFn: () => apiClient.listProfiles(),
+  });
+
+  const voiceNames =
+    voices?.profile_ids.map((id) => profiles?.find((p) => p.id === id)?.name).filter(Boolean) || [];
+
+  return (
+    <div className="flex flex-wrap gap-1.5">
+      {voiceNames.length > 0 ? (
+        voiceNames.map((name) => (
+          <Badge key={name} variant="outline" className="text-xs font-normal">
+            {name}
+          </Badge>
+        ))
+      ) : (
+        <span className="text-sm text-muted-foreground">No voices assigned</span>
+      )}
+    </div>
+  );
+}
+
+interface CreateChannelDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  devices: AudioDevice[];
+  onCreate: (name: string, deviceIds: string[]) => void;
+}
+
+function CreateChannelDialog({ open, onOpenChange, devices, onCreate }: CreateChannelDialogProps) {
+  const [name, setName] = useState('');
+  const [selectedDevices, setSelectedDevices] = useState<string[]>([]);
+
+  const handleSubmit = () => {
+    if (name.trim()) {
+      onCreate(name.trim(), selectedDevices);
+      setName('');
+      setSelectedDevices([]);
+    }
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>Create Audio Channel</DialogTitle>
+          <DialogDescription>
+            Create a new audio channel (bus) to route voices to specific output devices.
+          </DialogDescription>
+        </DialogHeader>
+        <div className="space-y-4">
+          <div>
+            <Label htmlFor="channel-name">Channel Name</Label>
+            <Input
+              id="channel-name"
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+              placeholder="e.g., Virtual Cable, Broadcast"
+            />
+          </div>
+          <div>
+            <Label>Output Devices</Label>
+            <Select
+              value={selectedDevices[0] || ''}
+              onValueChange={(value) => {
+                if (value && !selectedDevices.includes(value)) {
+                  setSelectedDevices([...selectedDevices, value]);
+                }
+              }}
+            >
+              <SelectTrigger>
+                <SelectValue placeholder="Select device" />
+              </SelectTrigger>
+              <SelectContent>
+                {devices.map((device) => (
+                  <SelectItem key={device.id} value={device.id}>
+                    {device.name} {device.is_default && '(default)'}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {selectedDevices.length > 0 && (
+              <div className="mt-2 space-y-1">
+                {selectedDevices.map((deviceId) => {
+                  const device = devices.find((d) => d.id === deviceId);
+                  return (
+                    <div
+                      key={deviceId}
+                      className="flex items-center justify-between text-sm bg-muted p-2 rounded"
+                    >
+                      <span>{device?.name || deviceId}</span>
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        onClick={() =>
+                          setSelectedDevices(selectedDevices.filter((id) => id !== deviceId))
+                        }
+                      >
+                        <Trash2 className="h-3 w-3" />
+                      </Button>
+                    </div>
+                  );
+                })}
+              </div>
+            )}
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => onOpenChange(false)}>
+            Cancel
+          </Button>
+          <Button onClick={handleSubmit} disabled={!name.trim()}>
+            Create
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+interface EditChannelDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  channel: {
+    id: string;
+    name: string;
+    device_ids: string[];
+  };
+  devices: AudioDevice[];
+  profiles: Array<{ id: string; name: string }>;
+  channelVoices: string[];
+  onUpdate: (name: string, deviceIds: string[]) => void;
+  onSetVoices: (profileIds: string[]) => void;
+}
+
+function EditChannelDialog({
+  open,
+  onOpenChange,
+  channel,
+  devices,
+  profiles,
+  channelVoices,
+  onUpdate,
+  onSetVoices,
+}: EditChannelDialogProps) {
+  const [name, setName] = useState(channel.name);
+  const [selectedDevices, setSelectedDevices] = useState<string[]>(channel.device_ids);
+  const [selectedVoices, setSelectedVoices] = useState<string[]>(channelVoices);
+
+  const handleSubmit = () => {
+    if (name.trim()) {
+      onUpdate(name.trim(), selectedDevices);
+      onSetVoices(selectedVoices);
+    }
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-2xl">
+        <DialogHeader>
+          <DialogTitle>Edit Channel</DialogTitle>
+          <DialogDescription>Update channel settings and voice assignments.</DialogDescription>
+        </DialogHeader>
+        <div className="space-y-4">
+          <div>
+            <Label htmlFor="edit-channel-name">Channel Name</Label>
+            <Input id="edit-channel-name" value={name} onChange={(e) => setName(e.target.value)} />
+          </div>
+          <div>
+            <Label>Output Devices</Label>
+            <Select
+              value=""
+              onValueChange={(value) => {
+                if (value && !selectedDevices.includes(value)) {
+                  setSelectedDevices([...selectedDevices, value]);
+                }
+              }}
+            >
+              <SelectTrigger>
+                <SelectValue placeholder="Add device" />
+              </SelectTrigger>
+              <SelectContent>
+                {devices.map((device) => (
+                  <SelectItem key={device.id} value={device.id}>
+                    {device.name} {device.is_default && '(default)'}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {selectedDevices.length > 0 && (
+              <div className="mt-2 space-y-1">
+                {selectedDevices.map((deviceId) => {
+                  const device = devices.find((d) => d.id === deviceId);
+                  return (
+                    <div
+                      key={deviceId}
+                      className="flex items-center justify-between text-sm bg-muted p-2 rounded"
+                    >
+                      <span>{device?.name || deviceId}</span>
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        onClick={() =>
+                          setSelectedDevices(selectedDevices.filter((id) => id !== deviceId))
+                        }
+                      >
+                        <Trash2 className="h-3 w-3" />
+                      </Button>
+                    </div>
+                  );
+                })}
+              </div>
+            )}
+          </div>
+          <div>
+            <Label>Assigned Voices</Label>
+            <Select
+              value=""
+              onValueChange={(value) => {
+                if (value && !selectedVoices.includes(value)) {
+                  setSelectedVoices([...selectedVoices, value]);
+                }
+              }}
+            >
+              <SelectTrigger>
+                <SelectValue placeholder="Add voice" />
+              </SelectTrigger>
+              <SelectContent>
+                {profiles.map((profile) => (
+                  <SelectItem key={profile.id} value={profile.id}>
+                    {profile.name}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {selectedVoices.length > 0 && (
+              <div className="mt-2 space-y-1">
+                {selectedVoices.map((profileId) => {
+                  const profile = profiles.find((p) => p.id === profileId);
+                  return (
+                    <div
+                      key={profileId}
+                      className="flex items-center justify-between text-sm bg-muted p-2 rounded"
+                    >
+                      <span>{profile?.name || profileId}</span>
+                      <Button
+                        variant="ghost"
+                        size="sm"
+                        onClick={() =>
+                          setSelectedVoices(selectedVoices.filter((id) => id !== profileId))
+                        }
+                      >
+                        <Trash2 className="h-3 w-3" />
+                      </Button>
+                    </div>
+                  );
+                })}
+              </div>
+            )}
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => onOpenChange(false)}>
+            Cancel
+          </Button>
+          <Button onClick={handleSubmit} disabled={!name.trim()}>
+            Save
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}

app/src/components/Generation/FloatingGenerateBox.tsx

@@ -134,7 +134,7 @@ export function FloatingGenerateBox({ isPlayerOpen }: FloatingGenerateBoxProps)
       });
 
       const audioUrl = apiClient.getAudioUrl(result.id);
-      setAudio(audioUrl, result.id, data.text.substring(0, 50));
+      setAudio(audioUrl, result.id, selectedProfileId, data.text.substring(0, 50));
 
       form.reset();
       setIsExpanded(false);

app/src/components/Generation/GenerationForm.tsx

@@ -120,7 +120,7 @@ export function GenerationForm() {
 
       // Autoplay the generated audio
       const audioUrl = apiClient.getAudioUrl(result.id);
-      setAudio(audioUrl, result.id, data.text.substring(0, 50));
+      setAudio(audioUrl, result.id, selectedProfileId, data.text.substring(0, 50));
 
       form.reset();
     } catch (error) {

app/src/components/History/HistoryTable.tsx

@@ -17,6 +17,7 @@ import {
 } from '@/components/ui/dropdown-menu';
 import { Textarea } from '@/components/ui/textarea';
 import { apiClient } from '@/lib/api/client';
+import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import {
   useDeleteGeneration,
   useExportGeneration,
@@ -33,7 +34,7 @@ import { usePlayerStore } from '@/stores/playerStore';
 
 // NEW ALTERNATE HISTORY VIEW - FIXED HEIGHT ROWS
 export function HistoryTable() {
-  const [page, setPage] = useState(0);
+  const [page, _setPage] = useState(0);
   const [isScrolled, setIsScrolled] = useState(false);
   const scrollRef = useRef<HTMLDivElement>(null);
   const fileInputRef = useRef<HTMLInputElement>(null);
@@ -69,14 +70,14 @@ export function HistoryTable() {
     return () => scrollEl.removeEventListener('scroll', handleScroll);
   }, []);
 
-  const handlePlay = (audioId: string, text: string) => {
+  const handlePlay = (audioId: string, text: string, profileId: string) => {
     // If clicking the same audio, restart it from the beginning
     if (currentAudioId === audioId) {
       restartCurrentAudio();
     } else {
       // Otherwise, load the new audio
       const audioUrl = apiClient.getAudioUrl(audioId);
-      setAudio(audioUrl, audioId, text.substring(0, 50));
+      setAudio(audioUrl, audioId, profileId, text.substring(0, 50));
     }
   };
 
@@ -143,7 +144,7 @@ export function HistoryTable() {
 
   const history = historyData?.items || [];
   const total = historyData?.total || 0;
-  const hasMore = history.length === limit && (page + 1) * limit < total;
+  const _hasMore = history.length === limit && (page + 1) * limit < total;
 
   return (
     <div className="flex flex-col h-full min-h-0 relative">
@@ -176,8 +177,8 @@ export function HistoryTable() {
           <div
             ref={scrollRef}
             className={cn(
-              'flex-1 min-h-0 overflow-y-auto space-y-2',
+              'flex-1 min-h-0 overflow-y-auto space-y-2 pb-4',
-              isPlayerVisible && 'max-h-[calc(100vh-117px)]',
+              isPlayerVisible && BOTTOM_SAFE_AREA_PADDING,
             )}
           >
             {history.map((gen) => {
@@ -195,7 +196,7 @@ export function HistoryTable() {
                     if (target.closest('textarea') || window.getSelection()?.toString()) {
                       return;
                     }
-                    handlePlay(gen.id, gen.text);
+                    handlePlay(gen.id, gen.text, gen.profile_id);
                   }}
                 >
                   {/* Waveform icon */}
@@ -242,7 +243,9 @@ export function HistoryTable() {
                         </Button>
                       </DropdownMenuTrigger>
                       <DropdownMenuContent align="end">
-                        <DropdownMenuItem onClick={() => handlePlay(gen.id, gen.text)}>
+                        <DropdownMenuItem
+                          onClick={() => handlePlay(gen.id, gen.text, gen.profile_id)}
+                        >
                           <Play className="mr-2 h-4 w-4" />
                           Play
                         </DropdownMenuItem>
@@ -275,24 +278,6 @@ export function HistoryTable() {
               );
             })}
           </div>
-
-          {(total > limit || page > 0) && (
-            <div className="flex justify-between items-center mt-4 shrink-0">
-              <Button
-                variant="outline"
-                onClick={() => setPage((p) => Math.max(0, p - 1))}
-                disabled={page === 0}
-              >
-                Previous
-              </Button>
-              <div className="text-sm text-muted-foreground">
-                Page {page + 1} • {total} total
-              </div>
-              <Button variant="outline" onClick={() => setPage((p) => p + 1)} disabled={!hasMore}>
-                Next
-              </Button>
-            </div>
-          )}
         </>
       )}
 

app/src/components/MainEditor/MainEditor.tsx

@@ -0,0 +1,160 @@
+import { Sparkles, Upload } from 'lucide-react';
+import { useRef, useState } from 'react';
+import { FloatingGenerateBox } from '@/components/Generation/FloatingGenerateBox';
+import { HistoryTable } from '@/components/History/HistoryTable';
+import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { ProfileList } from '@/components/VoiceProfiles/ProfileList';
+import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
+import { useImportProfile } from '@/lib/hooks/useProfiles';
+import { cn } from '@/lib/utils/cn';
+import { usePlayerStore } from '@/stores/playerStore';
+import { useUIStore } from '@/stores/uiStore';
+
+export function MainEditor() {
+  const audioUrl = usePlayerStore((state) => state.audioUrl);
+  const isPlayerVisible = !!audioUrl;
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const setDialogOpen = useUIStore((state) => state.setProfileDialogOpen);
+  const importProfile = useImportProfile();
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const [importDialogOpen, setImportDialogOpen] = useState(false);
+  const [selectedFile, setSelectedFile] = useState<File | null>(null);
+
+  const handleImportClick = () => {
+    fileInputRef.current?.click();
+  };
+
+  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (file) {
+      if (!file.name.endsWith('.voicebox.zip')) {
+        alert('Please select a valid .voicebox.zip file');
+        return;
+      }
+      setSelectedFile(file);
+      setImportDialogOpen(true);
+    }
+  };
+
+  const handleImportConfirm = () => {
+    if (selectedFile) {
+      importProfile.mutate(selectedFile, {
+        onSuccess: () => {
+          setImportDialogOpen(false);
+          setSelectedFile(null);
+          if (fileInputRef.current) {
+            fileInputRef.current.value = '';
+          }
+        },
+        onError: (error) => {
+          alert(`Failed to import profile: ${error.message}`);
+        },
+      });
+    }
+  };
+
+  return (
+    // Main view: Profiles top left, Generator bottom left, History right
+    <div className="grid grid-cols-1 lg:grid-cols-2 gap-6 h-full min-h-0 overflow-hidden relative">
+      {/* Left Column */}
+      <div className="flex flex-col min-h-0 overflow-hidden relative">
+        {/* Scroll Mask - Always visible, behind content */}
+        <div className="absolute top-0 left-0 right-0 h-16 bg-gradient-to-b from-background to-transparent z-0 pointer-events-none" />
+
+        {/* Fixed Header */}
+        <div className="absolute top-0 left-0 right-0 z-10">
+          <div className="flex items-center justify-between mb-4 px-1">
+            <h2 className="text-2xl font-bold">Voicebox</h2>
+            <div className="flex gap-2">
+              <Button variant="outline" onClick={handleImportClick}>
+                <Upload className="mr-2 h-4 w-4" />
+                Import Voice
+              </Button>
+              <input
+                ref={fileInputRef}
+                type="file"
+                accept=".voicebox.zip"
+                onChange={handleFileChange}
+                className="hidden"
+              />
+              <Button onClick={() => setDialogOpen(true)}>
+                <Sparkles className="mr-2 h-4 w-4" />
+                Create Voice
+              </Button>
+            </div>
+          </div>
+        </div>
+
+        {/* Scrollable Content */}
+        <div
+          ref={scrollRef}
+          className={cn(
+            'flex-1 min-h-0 overflow-y-auto pt-14',
+            isPlayerVisible ? BOTTOM_SAFE_AREA_PADDING : 'pb-4',
+          )}
+        >
+          <div className="flex flex-col gap-6">
+            {/* Profiles - Top Left */}
+            <div className="shrink-0 flex flex-col">
+              <ProfileList />
+            </div>
+
+            {/* Generator - Bottom Left */}
+            {/* <div className="shrink-0">
+              <GenerationForm />
+            </div> */}
+          </div>
+        </div>
+      </div>
+
+      {/* Right Column - History */}
+      <div className="flex flex-col min-h-0 overflow-hidden">
+        <HistoryTable />
+      </div>
+
+      {/* Floating Generate Box */}
+      <FloatingGenerateBox isPlayerOpen={!!audioUrl} />
+
+      {/* Import Dialog */}
+      <Dialog open={importDialogOpen} onOpenChange={setImportDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Import Profile</DialogTitle>
+            <DialogDescription>
+              Import the profile from "{selectedFile?.name}". This will create a new profile with
+              all samples.
+            </DialogDescription>
+          </DialogHeader>
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => {
+                setImportDialogOpen(false);
+                setSelectedFile(null);
+                if (fileInputRef.current) {
+                  fileInputRef.current.value = '';
+                }
+              }}
+            >
+              Cancel
+            </Button>
+            <Button
+              onClick={handleImportConfirm}
+              disabled={importProfile.isPending || !selectedFile}
+            >
+              {importProfile.isPending ? 'Importing...' : 'Import'}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+    </div>
+  );
+}

app/src/components/ModelsTab/ModelsTab.tsx

@@ -0,0 +1,9 @@
+import { ModelManagement } from '@/components/ServerSettings/ModelManagement';
+
+export function ModelsTab() {
+  return (
+    <div className="space-y-4 overflow-y-auto flex flex-col">
+      <ModelManagement />
+    </div>
+  );
+}

app/src/components/ServerSettings/ConnectionForm.tsx

@@ -1,6 +1,6 @@
 import { zodResolver } from '@hookform/resolvers/zod';
-import { useForm } from 'react-hook-form';
 import { useEffect } from 'react';
+import { useForm } from 'react-hook-form';
 import * as z from 'zod';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';

app/src/components/ServerSettings/ModelManagement.tsx

@@ -1,13 +1,6 @@
-import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { Download, Loader2, Trash2 } from 'lucide-react';
 import { useState } from 'react';
-import { apiClient } from '@/lib/api/client';
-import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/components/ui/card';
-import { Button } from '@/components/ui/button';
-import { Badge } from '@/components/ui/badge';
-import { Loader2, Download, CheckCircle2, Trash2 } from 'lucide-react';
-import { ModelProgress } from './ModelProgress';
-import { useToast } from '@/components/ui/use-toast';
-import { useModelDownloadToast } from '@/lib/hooks/useModelDownloadToast';
 import {
   AlertDialog,
   AlertDialogAction,
@@ -18,6 +11,13 @@ import {
   AlertDialogHeader,
   AlertDialogTitle,
 } from '@/components/ui/alert-dialog';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { useToast } from '@/components/ui/use-toast';
+import { apiClient } from '@/lib/api/client';
+import { useModelDownloadToast } from '@/lib/hooks/useModelDownloadToast';
+import { ModelProgress } from './ModelProgress';
 
 export function ModelManagement() {
   const { toast } = useToast();
@@ -197,8 +197,8 @@ export function ModelManagement() {
               {modelToDelete?.sizeMb && (
                 <>
                   {' '}
-                  This will free up {formatSize(modelToDelete.sizeMb)} of disk space. The model
+                  This will free up {formatSize(modelToDelete.sizeMb)} of disk space. The model will
-                  will need to be re-downloaded if you want to use it again.
+                  need to be re-downloaded if you want to use it again.
                 </>
               )}
             </AlertDialogDescription>
@@ -244,13 +244,7 @@ interface ModelItemProps {
   formatSize: (sizeMb?: number) => string;
 }
 
-function ModelItem({
+function ModelItem({ model, onDownload, onDelete, isDownloading, formatSize }: ModelItemProps) {
-  model,
-  onDownload,
-  onDelete,
-  isDownloading,
-  formatSize,
-}: ModelItemProps) {
   return (
     <div className="flex items-center justify-between p-3 border rounded-lg">
       <div className="flex-1">
@@ -277,14 +271,12 @@ function ModelItem({
         {model.downloaded ? (
           <div className="flex items-center gap-2">
             <div className="flex items-center gap-1 text-sm text-muted-foreground">
-              <CheckCircle2 className="h-4 w-4 text-green-500" />
               <span>Ready</span>
             </div>
             <Button
               size="sm"
               onClick={onDelete}
               variant="outline"
-              className="text-destructive hover:text-destructive"
               disabled={model.loaded}
               title={model.loaded ? 'Unload model before deleting' : 'Delete model'}
             >

app/src/components/ServerSettings/ModelProgress.tsx

@@ -1,9 +1,9 @@
+import { Loader2, XCircle } from 'lucide-react';
 import { useEffect, useState } from 'react';
-import { Progress } from '@/components/ui/progress';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { useServerStore } from '@/stores/serverStore';
+import { Progress } from '@/components/ui/progress';
 import type { ModelProgress as ModelProgressType } from '@/lib/api/types';
-import { Loader2, CheckCircle2, XCircle } from 'lucide-react';
+import { useServerStore } from '@/stores/serverStore';
 
 interface ModelProgressProps {
   modelName: string;
@@ -63,13 +63,11 @@ export function ModelProgress({ modelName, displayName }: ModelProgressProps) {
     const k = 1024;
     const sizes = ['B', 'KB', 'MB', 'GB'];
     const i = Math.floor(Math.log(bytes) / Math.log(k));
-    return `${(bytes / Math.pow(k, i)).toFixed(1)} ${sizes[i]}`;
+    return `${(bytes / k ** i).toFixed(1)} ${sizes[i]}`;
   };
 
   const getStatusIcon = () => {
     switch (progress.status) {
-      case 'complete':
-        return <CheckCircle2 className="h-4 w-4 text-green-500" />;
       case 'error':
         return <XCircle className="h-4 w-4 text-destructive" />;
       case 'downloading':

app/src/components/ServerSettings/ServerStatus.tsx

@@ -1,4 +1,4 @@
-import { CheckCircle2, Loader2, XCircle } from 'lucide-react';
+import { Loader2, XCircle } from 'lucide-react';
 import { Badge } from '@/components/ui/badge';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { useServerHealth } from '@/lib/hooks/useServer';
@@ -43,7 +43,6 @@ export function ServerStatus() {
         ) : health ? (
           <div className="space-y-2">
             <div className="flex items-center gap-2">
-              <CheckCircle2 className="h-4 w-4 text-green-500" />
               <span className="text-sm">Connected</span>
             </div>
             <div className="flex flex-wrap gap-2">

app/src/components/ServerSettings/UpdateStatus.tsx

@@ -1,11 +1,11 @@
-import { useState, useEffect } from 'react';
+import { getVersion } from '@tauri-apps/api/app';
-import { RefreshCw, Download, CheckCircle2, AlertCircle } from 'lucide-react';
+import { RefreshCw, Download, AlertCircle } from 'lucide-react';
+import { useEffect, useState } from 'react';
+import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Badge } from '@/components/ui/badge';
 import { Progress } from '@/components/ui/progress';
 import { useAutoUpdater } from '@/hooks/useAutoUpdater';
-import { getVersion } from '@tauri-apps/api/app';
 
 export function UpdateStatus() {
   const { status, checkForUpdates, downloadAndInstall, restartAndInstall } = useAutoUpdater(false);
@@ -77,15 +77,16 @@ export function UpdateStatus() {
                 Downloading update...
               </div>
               {status.downloadProgress !== undefined && (
-                <span className="text-muted-foreground">
+                <span className="text-muted-foreground">{status.downloadProgress}%</span>
-                  {status.downloadProgress}%
-                </span>
               )}
             </div>
             <Progress value={status.downloadProgress} />
-            {status.downloadedBytes !== undefined && status.totalBytes !== undefined && status.totalBytes > 0 && (
+            {status.downloadedBytes !== undefined &&
+              status.totalBytes !== undefined &&
+              status.totalBytes > 0 && (
                 <div className="text-xs text-muted-foreground">
-                {(status.downloadedBytes / 1024 / 1024).toFixed(1)} MB / {(status.totalBytes / 1024 / 1024).toFixed(1)} MB
+                  {(status.downloadedBytes / 1024 / 1024).toFixed(1)} MB /{' '}
+                  {(status.totalBytes / 1024 / 1024).toFixed(1)} MB
                 </div>
               )}
           </div>
@@ -94,14 +95,16 @@ export function UpdateStatus() {
         {status.readyToInstall && (
           <div className="space-y-3 p-4 border rounded-lg bg-green-500/10 border-green-500/20">
             <div className="flex items-center gap-2">
-              <CheckCircle2 className="h-5 w-5 text-green-500" />
               <div>
                 <div className="font-semibold">Update Ready to Install</div>
-                <div className="text-sm text-muted-foreground">Version {status.version} has been downloaded</div>
+                <div className="text-sm text-muted-foreground">
+                  Version {status.version} has been downloaded
+                </div>
               </div>
             </div>
             <div className="text-sm text-muted-foreground">
-              The app needs to restart to complete the installation. You can do this now or later at your convenience.
+              The app needs to restart to complete the installation. You can do this now or later at
+              your convenience.
             </div>
             <Button onClick={restartAndInstall} className="w-full" size="sm">
               <RefreshCw className="h-4 w-4 mr-2" />
@@ -112,7 +115,6 @@ export function UpdateStatus() {
 
         {!status.available && !status.checking && !status.error && status.checking === false && (
           <div className="flex items-center gap-2 text-sm text-muted-foreground">
-            <CheckCircle2 className="h-4 w-4 text-green-500" />
             You're up to date
           </div>
         )}

app/src/components/ServerTab/ServerTab.tsx

@@ -0,0 +1,27 @@
+import { ConnectionForm } from '@/components/ServerSettings/ConnectionForm';
+import { ServerStatus } from '@/components/ServerSettings/ServerStatus';
+import { UpdateStatus } from '@/components/ServerSettings/UpdateStatus';
+import { isTauri } from '@/lib/tauri';
+
+export function ServerTab() {
+  return (
+    <div className="space-y-4 overflow-y-auto flex flex-col">
+      <div className="grid gap-4 md:grid-cols-2">
+        <ConnectionForm />
+        <ServerStatus />
+      </div>
+      {isTauri() && <UpdateStatus />}
+      <div className="py-8 text-center text-sm text-muted-foreground">
+        Created by{' '}
+        <a
+          href="https://github.com/jamiepine"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="text-accent hover:underline"
+        >
+          Jamie Pine
+        </a>
+      </div>
+    </div>
+  );
+}

app/src/components/Sidebar.tsx

@@ -1,4 +1,4 @@
-import { Loader2, Settings, Volume2 } from 'lucide-react';
+import { Box, Loader2, Mic, Server, Speaker, Volume2 } from 'lucide-react';
 import voiceboxLogo from '@/assets/voicebox-logo.png';
 import { cn } from '@/lib/utils/cn';
 import { useGenerationStore } from '@/stores/generationStore';
@@ -11,8 +11,11 @@ interface SidebarProps {
 }
 
 const tabs = [
-  { id: 'main', icon: Volume2, label: 'Main' },
+  { id: 'main', icon: Volume2, label: 'Generate' },
-  { id: 'settings', icon: Settings, label: 'Settings' },
+  { id: 'voices', icon: Mic, label: 'Voices' },
+  { id: 'audio', icon: Speaker, label: 'Audio' },
+  { id: 'models', icon: Box, label: 'Models' },
+  { id: 'server', icon: Server, label: 'Server' },
 ];
 
 export function Sidebar({ activeTab, onTabChange, isMacOS }: SidebarProps) {

app/src/components/VoiceProfiles/ProfileList.tsx

@@ -1,16 +1,7 @@
-import { Mic, Sparkles, Upload } from 'lucide-react';
+import { Mic, Sparkles } from 'lucide-react';
-import { useRef, useState } from 'react';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
-import {
+import { useProfiles } from '@/lib/hooks/useProfiles';
-  Dialog,
-  DialogContent,
-  DialogDescription,
-  DialogFooter,
-  DialogHeader,
-  DialogTitle,
-} from '@/components/ui/dialog';
-import { useImportProfile, useProfiles } from '@/lib/hooks/useProfiles';
 import { useUIStore } from '@/stores/uiStore';
 import { ProfileCard } from './ProfileCard';
 import { ProfileForm } from './ProfileForm';
@@ -18,44 +9,6 @@ import { ProfileForm } from './ProfileForm';
 export function ProfileList() {
   const { data: profiles, isLoading, error } = useProfiles();
   const setDialogOpen = useUIStore((state) => state.setProfileDialogOpen);
-  const importProfile = useImportProfile();
-  const fileInputRef = useRef<HTMLInputElement>(null);
-  const [importDialogOpen, setImportDialogOpen] = useState(false);
-  const [selectedFile, setSelectedFile] = useState<File | null>(null);
-
-  const handleImportClick = () => {
-    fileInputRef.current?.click();
-  };
-
-  const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-    const file = e.target.files?.[0];
-    if (file) {
-      // Validate file extension
-      if (!file.name.endsWith('.voicebox.zip')) {
-        alert('Please select a valid .voicebox.zip file');
-        return;
-      }
-      setSelectedFile(file);
-      setImportDialogOpen(true);
-    }
-  };
-
-  const handleImportConfirm = () => {
-    if (selectedFile) {
-      importProfile.mutate(selectedFile, {
-        onSuccess: () => {
-          setImportDialogOpen(false);
-          setSelectedFile(null);
-          if (fileInputRef.current) {
-            fileInputRef.current.value = '';
-          }
-        },
-        onError: (error) => {
-          alert(`Failed to import profile: ${error.message}`);
-        },
-      });
-    }
-  };
 
   if (isLoading) {
     return null;
@@ -73,27 +26,6 @@ export function ProfileList() {
 
   return (
     <div className="flex flex-col">
-      <div className="flex items-center justify-between mb-4 shrink-0">
-        <h2 className="text-2xl font-bold">Voicebox</h2>
-        <div className="flex gap-2">
-          <Button variant="outline" onClick={handleImportClick}>
-            <Upload className="mr-2 h-4 w-4" />
-            Import Voice
-          </Button>
-          <input
-            ref={fileInputRef}
-            type="file"
-            accept=".voicebox.zip"
-            onChange={handleFileChange}
-            className="hidden"
-          />
-          <Button onClick={() => setDialogOpen(true)}>
-            <Sparkles className="mr-2 h-4 w-4" />
-            Create Voice
-          </Button>
-        </div>
-      </div>
-
       <div className="shrink-0">
         {allProfiles.length === 0 ? (
           <Card>
@@ -118,38 +50,6 @@ export function ProfileList() {
       </div>
 
       <ProfileForm />
-
-      <Dialog open={importDialogOpen} onOpenChange={setImportDialogOpen}>
-        <DialogContent>
-          <DialogHeader>
-            <DialogTitle>Import Profile</DialogTitle>
-            <DialogDescription>
-              Import the profile from "{selectedFile?.name}". This will create a new profile with
-              all samples.
-            </DialogDescription>
-          </DialogHeader>
-          <DialogFooter>
-            <Button
-              variant="outline"
-              onClick={() => {
-                setImportDialogOpen(false);
-                setSelectedFile(null);
-                if (fileInputRef.current) {
-                  fileInputRef.current.value = '';
-                }
-              }}
-            >
-              Cancel
-            </Button>
-            <Button
-              onClick={handleImportConfirm}
-              disabled={importProfile.isPending || !selectedFile}
-            >
-              {importProfile.isPending ? 'Importing...' : 'Import'}
-            </Button>
-          </DialogFooter>
-        </DialogContent>
-      </Dialog>
     </div>
   );
 }

app/src/components/VoicesTab/VoicesTab.tsx

@@ -1,6 +1,6 @@
 import { useQuery, useQueryClient } from '@tanstack/react-query';
-import { Edit, MoreHorizontal, Plus, Trash2 } from 'lucide-react';
+import { Edit, MoreHorizontal, Plus, Trash2, Mic } from 'lucide-react';
-import { useMemo } from 'react';
+import { useMemo, useRef } from 'react';
 import { Button } from '@/components/ui/button';
 import {
   DropdownMenu,
@@ -8,6 +8,7 @@ import {
   DropdownMenuItem,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu';
+import { MultiSelect } from '@/components/ui/multi-select';
 import {
   Table,
   TableBody,
@@ -16,9 +17,14 @@ import {
   TableHeader,
   TableRow,
 } from '@/components/ui/table';
+import { ProfileForm } from '@/components/VoiceProfiles/ProfileForm';
 import { apiClient } from '@/lib/api/client';
+import type { VoiceProfileResponse } from '@/lib/api/types';
+import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import { useHistory } from '@/lib/hooks/useHistory';
 import { useDeleteProfile, useProfileSamples, useProfiles } from '@/lib/hooks/useProfiles';
+import { cn } from '@/lib/utils/cn';
+import { usePlayerStore } from '@/stores/playerStore';
 import { useUIStore } from '@/stores/uiStore';
 
 export function VoicesTab() {
@@ -28,6 +34,9 @@ export function VoicesTab() {
   const setDialogOpen = useUIStore((state) => state.setProfileDialogOpen);
   const setEditingProfileId = useUIStore((state) => state.setEditingProfileId);
   const deleteProfile = useDeleteProfile();
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const audioUrl = usePlayerStore((state) => state.audioUrl);
+  const isPlayerVisible = !!audioUrl;
 
   // Get generation counts per profile
   const generationCounts = useMemo(() => {
@@ -94,7 +103,12 @@ export function VoicesTab() {
   }
 
   return (
-    <div className="h-full flex flex-col">
+    <div className="h-full flex flex-col relative overflow-hidden">
+      {/* Scroll Mask - Always visible, behind content */}
+      <div className="absolute top-0 left-0 right-0 h-16 bg-gradient-to-b from-background to-transparent z-10 pointer-events-none" />
+
+      {/* Fixed Header */}
+      <div className="absolute top-0 left-0 right-0 z-20">
         <div className="flex items-center justify-between mb-6">
           <h1 className="text-2xl font-bold">Voices</h1>
           <Button onClick={() => setDialogOpen(true)}>
@@ -102,8 +116,16 @@ export function VoicesTab() {
             New Voice
           </Button>
         </div>
+      </div>
 
-      <div className="flex-1 overflow-auto">
+      {/* Scrollable Content */}
+      <div
+        ref={scrollRef}
+        className={cn(
+          'flex-1 overflow-y-auto pt-16 relative z-0',
+          isPlayerVisible && BOTTOM_SAFE_AREA_PADDING,
+        )}
+      >
         <Table>
           <TableHeader>
             <TableRow>
@@ -131,17 +153,14 @@ export function VoicesTab() {
           </TableBody>
         </Table>
       </div>
+
+      <ProfileForm />
     </div>
   );
 }
 
 interface VoiceRowProps {
-  profile: {
+  profile: VoiceProfileResponse;
-    id: string;
-    name: string;
-    description: string | null;
-    language: string;
-  };
   generationCount: number;
   channelIds: string[];
   channels: Array<{ id: string; name: string; is_default: boolean }>;
@@ -162,37 +181,36 @@ function VoiceRow({
   const { data: samples } = useProfileSamples(profile.id);
 
   return (
-    <TableRow>
+    <TableRow className="cursor-pointer" onClick={onEdit}>
       <TableCell>
+        <div className="flex items-center gap-2">
+          <div className="h-8 w-8 rounded-lg bg-muted flex items-center justify-center shrink-0">
+            <Mic className="h-4 w-4 text-muted-foreground" />
+          </div>
           <div>
             <div className="font-medium">{profile.name}</div>
             {profile.description && (
               <div className="text-sm text-muted-foreground">{profile.description}</div>
             )}
           </div>
+        </div>
       </TableCell>
-      <TableCell>{profile.language}</TableCell>
+      <TableCell onClick={(e) => e.stopPropagation()}>{profile.language}</TableCell>
-      <TableCell>{generationCount}</TableCell>
+      <TableCell onClick={(e) => e.stopPropagation()}>{generationCount}</TableCell>
-      <TableCell>{samples?.length || 0}</TableCell>
+      <TableCell onClick={(e) => e.stopPropagation()}>{samples?.length || 0}</TableCell>
-      <TableCell>
+      <TableCell onClick={(e) => e.stopPropagation()}>
-        <select
+        <MultiSelect
-          multiple
+          options={channels.map((ch) => ({
+            value: ch.id,
+            label: `${ch.name}${ch.is_default ? ' (Default)' : ''}`,
+          }))}
           value={channelIds}
-          onChange={(e) => {
+          onChange={onChannelChange}
-            const selected = Array.from(e.target.selectedOptions, (opt) => opt.value);
+          placeholder="Select channels..."
-            onChannelChange(selected);
+          className="min-w-[200px]"
-          }}
+        />
-          className="w-full min-w-[200px] border rounded px-2 py-1 text-sm"
-          size={Math.min(channels.length + 1, 5)}
-        >
-          {channels.map((ch) => (
-            <option key={ch.id} value={ch.id}>
-              {ch.name} {ch.is_default && '(Default)'}
-            </option>
-          ))}
-        </select>
       </TableCell>
-      <TableCell>
+      <TableCell onClick={(e) => e.stopPropagation()}>
         <DropdownMenu>
           <DropdownMenuTrigger asChild>
             <Button variant="ghost" size="icon">

app/src/components/ui/checkbox.tsx

@@ -1,33 +1,41 @@
 import * as React from 'react';
+import { Check } from 'lucide-react';
 import { cn } from '@/lib/utils/cn';
 
-export interface CheckboxProps extends React.InputHTMLAttributes<HTMLInputElement> {
+export interface CheckboxProps {
+  checked?: boolean;
   onCheckedChange?: (checked: boolean) => void;
+  disabled?: boolean;
+  className?: string;
+  id?: string;
 }
 
-const Checkbox = React.forwardRef<HTMLInputElement, CheckboxProps>(
+const Checkbox = React.forwardRef<HTMLButtonElement, CheckboxProps>(
-  ({ className, onCheckedChange, ...props }, ref) => {
+  ({ checked = false, onCheckedChange, disabled = false, className, id, ...props }, ref) => {
-    const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-      if (onCheckedChange) {
-        onCheckedChange(e.target.checked);
-      }
-      // Call original onChange if provided
-      if (props.onChange) {
-        props.onChange(e);
-      }
-    };
-
     return (
-      <input
+      <button
-        type="checkbox"
+        type="button"
+        ref={ref}
+        id={id}
+        role="checkbox"
+        aria-checked={checked}
+        disabled={disabled}
+        onClick={() => {
+          if (!disabled && onCheckedChange) {
+            onCheckedChange(!checked);
+          }
+        }}
         className={cn(
-          'h-4 w-4 rounded border-gray-300 text-primary focus:ring-2 focus:ring-primary focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
+          'h-4 w-4 rounded border-2 flex items-center justify-center shrink-0 transition-colors',
+          checked ? 'bg-accent border-accent' : 'border-muted-foreground/30',
+          disabled && 'opacity-50 cursor-not-allowed',
+          !disabled && 'cursor-pointer',
           className,
         )}
-        ref={ref}
-        onChange={handleChange}
         {...props}
-      />
+      >
+        {checked && <Check className="h-3 w-3 text-accent-foreground" />}
+      </button>
     );
   },
 );

app/src/components/ui/multi-select.tsx

@@ -0,0 +1,102 @@
+import * as React from 'react';
+import { ChevronDown, Check } from 'lucide-react';
+import { cn } from '@/lib/utils/cn';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu';
+import * as DropdownMenuPrimitive from '@radix-ui/react-dropdown-menu';
+
+export interface MultiSelectOption {
+  value: string;
+  label: string;
+}
+
+export interface MultiSelectProps {
+  options: MultiSelectOption[];
+  value: string[];
+  onChange: (value: string[]) => void;
+  placeholder?: string;
+  className?: string;
+}
+
+const MultiSelectCheckboxItem = React.forwardRef<
+  React.ElementRef<typeof DropdownMenuPrimitive.CheckboxItem>,
+  React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.CheckboxItem>
+>(({ className, children, checked, ...props }, ref) => (
+  <DropdownMenuPrimitive.CheckboxItem
+    ref={ref}
+    className={cn(
+      'relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-xs outline-none focus:bg-accent focus:text-accent-foreground data-disabled:pointer-events-none data-disabled:opacity-50',
+      className,
+    )}
+    checked={checked}
+    {...props}
+  >
+    <span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
+      <DropdownMenuPrimitive.ItemIndicator>
+        <Check className="h-4 w-4" />
+      </DropdownMenuPrimitive.ItemIndicator>
+    </span>
+    {children}
+  </DropdownMenuPrimitive.CheckboxItem>
+));
+MultiSelectCheckboxItem.displayName = DropdownMenuPrimitive.CheckboxItem.displayName;
+
+export function MultiSelect({
+  options,
+  value,
+  onChange,
+  placeholder = 'Select...',
+  className,
+}: MultiSelectProps) {
+  const [open, setOpen] = React.useState(false);
+
+  const handleSelect = (optionValue: string) => {
+    const newValue = value.includes(optionValue)
+      ? value.filter((v) => v !== optionValue)
+      : [...value, optionValue];
+    onChange(newValue);
+  };
+
+  const displayText =
+    value.length === 0
+      ? placeholder
+      : value.length === 1
+        ? options.find((opt) => opt.value === value[0])?.label || placeholder
+        : `${value.length} selected`;
+
+  return (
+    <DropdownMenu open={open} onOpenChange={setOpen}>
+      <DropdownMenuTrigger asChild>
+        <button
+          type="button"
+          className={cn(
+            'flex h-8 w-full items-center justify-between rounded-full border border-border bg-card px-3 py-2 text-xs ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 hover:bg-background/50 transition-all',
+            className,
+          )}
+        >
+          <span className="line-clamp-1">{displayText}</span>
+          <ChevronDown className="h-4 w-4 opacity-50" />
+        </button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent
+        className="max-h-96 overflow-auto"
+        align="start"
+        onCloseAutoFocus={(e) => e.preventDefault()}
+      >
+        {options.map((option) => (
+          <MultiSelectCheckboxItem
+            key={option.value}
+            checked={value.includes(option.value)}
+            onSelect={() => handleSelect(option.value)}
+            onCheckedChange={() => handleSelect(option.value)}
+          >
+            {option.label}
+          </MultiSelectCheckboxItem>
+        ))}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}

app/src/lib/api/client.ts

@@ -279,6 +279,88 @@ class ApiClient {
   async getActiveTasks(): Promise<ActiveTasksResponse> {
     return this.request<ActiveTasksResponse>('/tasks/active');
   }
+
+  // Audio Channels
+  async listChannels(): Promise<
+    Array<{
+      id: string;
+      name: string;
+      is_default: boolean;
+      device_ids: string[];
+      created_at: string;
+    }>
+  > {
+    return this.request('/channels');
+  }
+
+  async createChannel(data: {
+    name: string;
+    device_ids: string[];
+  }): Promise<{
+    id: string;
+    name: string;
+    is_default: boolean;
+    device_ids: string[];
+    created_at: string;
+  }> {
+    return this.request('/channels', {
+      method: 'POST',
+      body: JSON.stringify(data),
+    });
+  }
+
+  async updateChannel(
+    channelId: string,
+    data: {
+      name?: string;
+      device_ids?: string[];
+    },
+  ): Promise<{
+    id: string;
+    name: string;
+    is_default: boolean;
+    device_ids: string[];
+    created_at: string;
+  }> {
+    return this.request(`/channels/${channelId}`, {
+      method: 'PUT',
+      body: JSON.stringify(data),
+    });
+  }
+
+  async deleteChannel(channelId: string): Promise<{ message: string }> {
+    return this.request(`/channels/${channelId}`, {
+      method: 'DELETE',
+    });
+  }
+
+  async getChannelVoices(channelId: string): Promise<{ profile_ids: string[] }> {
+    return this.request(`/channels/${channelId}/voices`);
+  }
+
+  async setChannelVoices(
+    channelId: string,
+    profileIds: string[],
+  ): Promise<{ message: string }> {
+    return this.request(`/channels/${channelId}/voices`, {
+      method: 'PUT',
+      body: JSON.stringify({ profile_ids: profileIds }),
+    });
+  }
+
+  async getProfileChannels(profileId: string): Promise<{ channel_ids: string[] }> {
+    return this.request(`/profiles/${profileId}/channels`);
+  }
+
+  async setProfileChannels(
+    profileId: string,
+    channelIds: string[],
+  ): Promise<{ message: string }> {
+    return this.request(`/profiles/${profileId}/channels`, {
+      method: 'PUT',
+      body: JSON.stringify({ channel_ids: channelIds }),
+    });
+  }
 }
 
 export const apiClient = new ApiClient();

app/src/lib/constants/ui.ts

@@ -0,0 +1,15 @@
+/**
+ * UI layout constants for safe area padding
+ */
+
+/**
+ * Top safe area padding - height of the drag region bar
+ * Corresponds to Tailwind's pt-12 (3rem / 48px)
+ */
+export const TOP_SAFE_AREA_PADDING = 'pt-12';
+
+/**
+ * Bottom safe area padding - height of the audio player
+ * Corresponds to Tailwind's pb-32 (8rem / 128px)
+ */
+export const BOTTOM_SAFE_AREA_PADDING = 'pb-32';

app/src/stores/playerStore.ts

@@ -3,6 +3,7 @@ import { create } from 'zustand';
 interface PlayerState {
   audioUrl: string | null;
   audioId: string | null;
+  profileId: string | null;
   title: string | null;
   isPlaying: boolean;
   currentTime: number;
@@ -11,7 +12,7 @@ interface PlayerState {
   isLooping: boolean;
   shouldRestart: boolean;
 
-  setAudio: (url: string, id: string, title?: string) => void;
+  setAudio: (url: string, id: string, profileId: string | null, title?: string) => void;
   setIsPlaying: (playing: boolean) => void;
   setCurrentTime: (time: number) => void;
   setDuration: (duration: number) => void;
@@ -25,6 +26,7 @@ interface PlayerState {
 export const usePlayerStore = create<PlayerState>((set) => ({
   audioUrl: null,
   audioId: null,
+  profileId: null,
   title: null,
   isPlaying: false,
   currentTime: 0,
@@ -33,10 +35,11 @@ export const usePlayerStore = create<PlayerState>((set) => ({
   isLooping: false,
   shouldRestart: false,
 
-  setAudio: (url, id, title) =>
+  setAudio: (url, id, profileId, title) =>
     set({
       audioUrl: url,
       audioId: id,
+      profileId: profileId || null,
       title: title || null,
       currentTime: 0,
       isPlaying: false,
@@ -53,6 +56,7 @@ export const usePlayerStore = create<PlayerState>((set) => ({
     set({
       audioUrl: null,
       audioId: null,
+      profileId: null,
       title: null,
       isPlaying: false,
       currentTime: 0,

backend/database.py

@@ -2,7 +2,7 @@
 SQLite database ORM using SQLAlchemy.
 """
 
-from sqlalchemy import create_engine, Column, String, Integer, Float, DateTime, Text, ForeignKey
+from sqlalchemy import create_engine, Column, String, Integer, Float, DateTime, Text, ForeignKey, Boolean
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker, Session
 from datetime import datetime
@@ -62,6 +62,33 @@ class Project(Base):
     updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
 
 
+class AudioChannel(Base):
+    """Audio channel (bus) database model."""
+    __tablename__ = "audio_channels"
+    
+    id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
+    name = Column(String, nullable=False)
+    is_default = Column(Boolean, default=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+
+class ChannelDeviceMapping(Base):
+    """Mapping between channels and OS audio devices."""
+    __tablename__ = "channel_device_mappings"
+    
+    id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
+    channel_id = Column(String, ForeignKey("audio_channels.id"), nullable=False)
+    device_id = Column(String, nullable=False)  # OS device identifier
+
+
+class ProfileChannelMapping(Base):
+    """Mapping between voice profiles and audio channels (many-to-many)."""
+    __tablename__ = "profile_channel_mappings"
+    
+    profile_id = Column(String, ForeignKey("profiles.id"), primary_key=True)
+    channel_id = Column(String, ForeignKey("audio_channels.id"), primary_key=True)
+
+
 # Database setup will be initialized in init_db()
 engine = None
 SessionLocal = None
@@ -83,6 +110,31 @@ def init_db():
     SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
     Base.metadata.create_all(bind=engine)
     
+    # Create default channel if it doesn't exist
+    db = SessionLocal()
+    try:
+        default_channel = db.query(AudioChannel).filter(AudioChannel.is_default == True).first()
+        if not default_channel:
+            default_channel = AudioChannel(
+                id=str(uuid.uuid4()),
+                name="Default",
+                is_default=True
+            )
+            db.add(default_channel)
+            
+            # Assign all existing profiles to default channel
+            profiles = db.query(VoiceProfile).all()
+            for profile in profiles:
+                mapping = ProfileChannelMapping(
+                    profile_id=profile.id,
+                    channel_id=default_channel.id
+                )
+                db.add(mapping)
+            
+            db.commit()
+    finally:
+        db.close()
+
 
 def get_db():
     """Get database session (generator for dependency injection)."""

backend/main.py

@@ -19,7 +19,7 @@ import io
 from pathlib import Path
 import uuid
 
-from . import database, models, profiles, history, tts, transcribe, config, export_import
+from . import database, models, profiles, history, tts, transcribe, config, export_import, channels
 from .database import get_db, Generation as DBGeneration, VoiceProfile as DBVoiceProfile
 from .utils.progress import get_progress_manager
 from .utils.tasks import get_task_manager
@@ -296,6 +296,125 @@ async def export_profile(
         raise HTTPException(status_code=500, detail=str(e))
 
 
+# ============================================
+# AUDIO CHANNEL ENDPOINTS
+# ============================================
+
+@app.get("/channels", response_model=List[models.AudioChannelResponse])
+async def list_channels(db: Session = Depends(get_db)):
+    """List all audio channels."""
+    return await channels.list_channels(db)
+
+
+@app.post("/channels", response_model=models.AudioChannelResponse)
+async def create_channel(
+    data: models.AudioChannelCreate,
+    db: Session = Depends(get_db),
+):
+    """Create a new audio channel."""
+    try:
+        return await channels.create_channel(data, db)
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.get("/channels/{channel_id}", response_model=models.AudioChannelResponse)
+async def get_channel(
+    channel_id: str,
+    db: Session = Depends(get_db),
+):
+    """Get an audio channel by ID."""
+    channel = await channels.get_channel(channel_id, db)
+    if not channel:
+        raise HTTPException(status_code=404, detail="Channel not found")
+    return channel
+
+
+@app.put("/channels/{channel_id}", response_model=models.AudioChannelResponse)
+async def update_channel(
+    channel_id: str,
+    data: models.AudioChannelUpdate,
+    db: Session = Depends(get_db),
+):
+    """Update an audio channel."""
+    try:
+        channel = await channels.update_channel(channel_id, data, db)
+        if not channel:
+            raise HTTPException(status_code=404, detail="Channel not found")
+        return channel
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.delete("/channels/{channel_id}")
+async def delete_channel(
+    channel_id: str,
+    db: Session = Depends(get_db),
+):
+    """Delete an audio channel."""
+    try:
+        success = await channels.delete_channel(channel_id, db)
+        if not success:
+            raise HTTPException(status_code=404, detail="Channel not found")
+        return {"message": "Channel deleted successfully"}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.get("/channels/{channel_id}/voices")
+async def get_channel_voices(
+    channel_id: str,
+    db: Session = Depends(get_db),
+):
+    """Get list of profile IDs assigned to a channel."""
+    try:
+        profile_ids = await channels.get_channel_voices(channel_id, db)
+        return {"profile_ids": profile_ids}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.put("/channels/{channel_id}/voices")
+async def set_channel_voices(
+    channel_id: str,
+    data: models.ChannelVoiceAssignment,
+    db: Session = Depends(get_db),
+):
+    """Set which voices are assigned to a channel."""
+    try:
+        await channels.set_channel_voices(channel_id, data, db)
+        return {"message": "Channel voices updated successfully"}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.get("/profiles/{profile_id}/channels")
+async def get_profile_channels(
+    profile_id: str,
+    db: Session = Depends(get_db),
+):
+    """Get list of channel IDs assigned to a profile."""
+    try:
+        channel_ids = await channels.get_profile_channels(profile_id, db)
+        return {"channel_ids": channel_ids}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
+@app.put("/profiles/{profile_id}/channels")
+async def set_profile_channels(
+    profile_id: str,
+    data: models.ProfileChannelAssignment,
+    db: Session = Depends(get_db),
+):
+    """Set which channels a profile is assigned to."""
+    try:
+        await channels.set_profile_channels(profile_id, data, db)
+        return {"message": "Profile channels updated successfully"}
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+
+
 # ============================================
 # GENERATION ENDPOINTS
 # ============================================

backend/models.py

@@ -159,3 +159,37 @@ class ActiveTasksResponse(BaseModel):
     """Response model for active tasks."""
     downloads: List[ActiveDownloadTask]
     generations: List[ActiveGenerationTask]
+
+
+class AudioChannelCreate(BaseModel):
+    """Request model for creating an audio channel."""
+    name: str = Field(..., min_length=1, max_length=100)
+    device_ids: List[str] = Field(default_factory=list)
+
+
+class AudioChannelUpdate(BaseModel):
+    """Request model for updating an audio channel."""
+    name: Optional[str] = Field(None, min_length=1, max_length=100)
+    device_ids: Optional[List[str]] = None
+
+
+class AudioChannelResponse(BaseModel):
+    """Response model for audio channel."""
+    id: str
+    name: str
+    is_default: bool
+    device_ids: List[str]
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class ChannelVoiceAssignment(BaseModel):
+    """Request model for assigning voices to a channel."""
+    profile_ids: List[str]
+
+
+class ProfileChannelAssignment(BaseModel):
+    """Request model for assigning channels to a profile."""
+    channel_ids: List[str]

tauri/src-tauri/Cargo.lock

@@ -32,6 +32,28 @@ dependencies = [
  "alloc-no-stdlib",
 ]
 
+[[package]]
+name = "alsa"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed7572b7ba83a31e20d1b48970ee402d2e3e0537dcfe0a3ff4d6eb7508617d43"
+dependencies = [
+ "alsa-sys",
+ "bitflags 2.10.0",
+ "cfg-if",
+ "libc",
+]
+
+[[package]]
+name = "alsa-sys"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db8fee663d06c4e303404ef5f40488a53e062f89ba8bfed81f42325aafad1527"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -56,6 +78,12 @@ dependencies = [
  "derive_arbitrary",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
 [[package]]
 name = "atk"
 version = "0.18.2"
@@ -276,6 +304,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6354c81bbfd62d9cfa9cb3c773c2b7b2a3a482d569de977fd0e961f6e7c00583"
 dependencies = [
  "find-msvc-tools",
+ "jobserver",
+ "libc",
  "shlex",
 ]
 
@@ -416,6 +446,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "coreaudio-rs"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "321077172d79c662f64f5071a03120748d5bb652f5231570141be24cfcd2bace"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation-sys",
+ "coreaudio-sys",
+]
+
 [[package]]
 name = "coreaudio-sys"
 version = "0.2.17"
@@ -425,6 +466,29 @@ dependencies = [
  "bindgen",
 ]
 
+[[package]]
+name = "cpal"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "873dab07c8f743075e57f524c583985fbaf745602acbe916a01539364369a779"
+dependencies = [
+ "alsa",
+ "core-foundation-sys",
+ "coreaudio-rs",
+ "dasp_sample",
+ "jni",
+ "js-sys",
+ "libc",
+ "mach2",
+ "ndk 0.8.0",
+ "ndk-context",
+ "oboe",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows 0.54.0",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.17"
@@ -540,6 +604,12 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "dasp_sample"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c87e182de0887fd5361989c677c4e8f5000cd9491d6d563161a8f3a5519fc7f"
+
 [[package]]
 name = "deranged"
 version = "0.5.5"
@@ -755,6 +825,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "extended"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af9673d8203fcb076b19dfd17e38b3d4ae9f44959416ea532ce72415a6020365"
+
 [[package]]
 name = "fastrand"
 version = "2.3.0"
@@ -1653,6 +1729,16 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
+[[package]]
+name = "jobserver"
+version = "0.1.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9afb3de4395d6b3e67a780b6de64b51c978ecf11cb9a462c66be7d4ca9039d33"
+dependencies = [
+ "getrandom 0.3.4",
+ "libc",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.85"
@@ -1814,6 +1900,15 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
 
+[[package]]
+name = "mach2"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d640282b302c0bb0a2a8e0233ead9035e3bed871f0b7e81fe4a1ec829765db44"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "malloc_buf"
 version = "0.0.6"
@@ -1929,6 +2024,20 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "ndk"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2076a31b7010b17a38c01907c45b945e8f11495ee4dd588309718901b1f7a5b7"
+dependencies = [
+ "bitflags 2.10.0",
+ "jni-sys",
+ "log",
+ "ndk-sys 0.5.0+25.2.9519653",
+ "num_enum",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "ndk"
 version = "0.9.0"
@@ -1938,7 +2047,7 @@ dependencies = [
  "bitflags 2.10.0",
  "jni-sys",
  "log",
- "ndk-sys",
+ "ndk-sys 0.6.0+11769913",
  "num_enum",
  "raw-window-handle",
  "thiserror 1.0.69",
@@ -1950,6 +2059,15 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "27b02d87554356db9e9a873add8782d4ea6e3e58ea071a9adb9a2e8ddb884a8b"
 
+[[package]]
+name = "ndk-sys"
+version = "0.5.0+25.2.9519653"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c196769dd60fd4f363e11d948139556a344e79d451aeb2fa2fd040738ef7691"
+dependencies = [
+ "jni-sys",
+]
+
 [[package]]
 name = "ndk-sys"
 version = "0.6.0+11769913"
@@ -1987,6 +2105,17 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf97ec579c3c42f953ef76dbf8d55ac91fb219dde70e49aa4a6b7d74e9919050"
 
+[[package]]
+name = "num-derive"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.46"
@@ -2260,6 +2389,29 @@ dependencies = [
  "objc2-security",
 ]
 
+[[package]]
+name = "oboe"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8b61bebd49e5d43f5f8cc7ee2891c16e0f41ec7954d36bcb6c14c5e0de867fb"
+dependencies = [
+ "jni",
+ "ndk 0.8.0",
+ "ndk-context",
+ "num-derive",
+ "num-traits",
+ "oboe-sys",
+]
+
+[[package]]
+name = "oboe-sys"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c8bb09a4a2b1d668170cfe0a7d5bc103f8999fb316c98099b6a9939c9f2e79d"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -3448,7 +3600,7 @@ checksum = "aac18da81ebbf05109ab275b157c22a653bb3c12cf884450179942f81bcbf6c3"
 dependencies = [
  "bytemuck",
  "js-sys",
- "ndk",
+ "ndk 0.9.0",
  "objc2",
  "objc2-core-foundation",
  "objc2-core-graphics",
@@ -3542,6 +3694,201 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "symphonia"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5773a4c030a19d9bfaa090f49746ff35c75dfddfa700df7a5939d5e076a57039"
+dependencies = [
+ "lazy_static",
+ "symphonia-bundle-flac",
+ "symphonia-bundle-mp3",
+ "symphonia-codec-aac",
+ "symphonia-codec-adpcm",
+ "symphonia-codec-alac",
+ "symphonia-codec-pcm",
+ "symphonia-codec-vorbis",
+ "symphonia-core",
+ "symphonia-format-caf",
+ "symphonia-format-isomp4",
+ "symphonia-format-mkv",
+ "symphonia-format-ogg",
+ "symphonia-format-riff",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-bundle-flac"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c91565e180aea25d9b80a910c546802526ffd0072d0b8974e3ebe59b686c9976"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-bundle-mp3"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4872dd6bb56bf5eac799e3e957aa1981086c3e613b27e0ac23b176054f7c57ed"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-codec-aac"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c263845aa86881416849c1729a54c7f55164f8b96111dba59de46849e73a790"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-codec-adpcm"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dddc50e2bbea4cfe027441eece77c46b9f319748605ab8f3443350129ddd07f"
+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-codec-alac"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8413fa754942ac16a73634c9dfd1500ed5c61430956b33728567f667fdd393ab"
+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-codec-pcm"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e89d716c01541ad3ebe7c91ce4c8d38a7cf266a3f7b2f090b108fb0cb031d95"
+dependencies = [
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-codec-vorbis"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f025837c309cd69ffef572750b4a2257b59552c5399a5e49707cc5b1b85d1c73"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-core"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea00cc4f79b7f6bb7ff87eddc065a1066f3a43fe1875979056672c9ef948c2af"
+dependencies = [
+ "arrayvec",
+ "bitflags 1.3.2",
+ "bytemuck",
+ "lazy_static",
+ "log",
+]
+
+[[package]]
+name = "symphonia-format-caf"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8faf379316b6b6e6bbc274d00e7a592e0d63ff1a7e182ce8ba25e24edd3d096"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-format-isomp4"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "243739585d11f81daf8dac8d9f3d18cc7898f6c09a259675fc364b382c30e0a5"
+dependencies = [
+ "encoding_rs",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-mkv"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "122d786d2c43a49beb6f397551b4a050d8229eaa54c7ddf9ee4b98899b8742d0"
+dependencies = [
+ "lazy_static",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-ogg"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b4955c67c1ed3aa8ae8428d04ca8397fbef6a19b2b051e73b5da8b1435639cb"
+dependencies = [
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+ "symphonia-utils-xiph",
+]
+
+[[package]]
+name = "symphonia-format-riff"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2d7c3df0e7d94efb68401d81906eae73c02b40d5ec1a141962c592d0f11a96f"
+dependencies = [
+ "extended",
+ "log",
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
+[[package]]
+name = "symphonia-metadata"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36306ff42b9ffe6e5afc99d49e121e0bd62fe79b9db7b9681d48e29fa19e6b16"
+dependencies = [
+ "encoding_rs",
+ "lazy_static",
+ "log",
+ "symphonia-core",
+]
+
+[[package]]
+name = "symphonia-utils-xiph"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee27c85ab799a338446b68eec77abf42e1a6f1bb490656e121c6e27bfbab9f16"
+dependencies = [
+ "symphonia-core",
+ "symphonia-metadata",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -3618,9 +3965,9 @@ dependencies = [
  "lazy_static",
  "libc",
  "log",
- "ndk",
+ "ndk 0.9.0",
  "ndk-context",
- "ndk-sys",
+ "ndk-sys 0.6.0+11769913",
  "objc2",
  "objc2-app-kit",
  "objc2-foundation",
@@ -4498,12 +4845,14 @@ dependencies = [
  "base64 0.22.1",
  "core-foundation-sys",
  "coreaudio-sys",
+ "cpal",
  "hound",
  "objc",
  "scopeguard",
  "screencapturekit",
  "serde",
  "serde_json",
+ "symphonia",
  "tauri",
  "tauri-build",
  "tauri-plugin-dialog",
@@ -4816,6 +5165,16 @@ dependencies = [
  "windows-version",
 ]
 
+[[package]]
+name = "windows"
+version = "0.54.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9252e5725dbed82865af151df558e754e4a3c2c30818359eb17465f1346a1b49"
+dependencies = [
+ "windows-core 0.54.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows"
 version = "0.61.3"
@@ -4859,6 +5218,16 @@ dependencies = [
  "windows-core 0.62.2",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.54.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12661b9c89351d684a50a8a643ce5f608e20243b9fb84687800163429f161d65"
+dependencies = [
+ "windows-result 0.1.2",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-core"
 version = "0.61.2"
@@ -4961,6 +5330,15 @@ dependencies = [
  "windows-link 0.2.1",
 ]
 
+[[package]]
+name = "windows-result"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e383302e8ec8515204254685643de10811af0ed97ea37210dc26fb0032647f8"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"
@@ -5316,7 +5694,7 @@ dependencies = [
  "jni",
  "kuchikiki",
  "libc",
- "ndk",
+ "ndk 0.9.0",
  "objc2",
  "objc2-app-kit",
  "objc2-core-foundation",

tauri/src-tauri/Cargo.toml

@@ -22,6 +22,8 @@ serde_json = "1.0"
 tokio = { version = "1", features = ["full"] }
 hound = "3.5"
 base64 = "0.22"
+cpal = "0.15"
+symphonia = { version = "0.5", features = ["all"] }
 scopeguard = "1.2.0"
 
 [target.'cfg(target_os = "macos")'.dependencies]

tauri/src-tauri/src/audio_output.rs

@@ -0,0 +1,468 @@
+use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
+use cpal::{Device, Host, SampleFormat, Stream, StreamConfig};
+use std::sync::{Arc, Mutex};
+use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct AudioOutputDevice {
+    pub id: String,
+    pub name: String,
+    pub is_default: bool,
+}
+
+pub struct AudioOutputState {
+    host: Host,
+    stop_flag: Arc<AtomicBool>,
+}
+
+impl AudioOutputState {
+    pub fn new() -> Self {
+        Self {
+            host: cpal::default_host(),
+            stop_flag: Arc::new(AtomicBool::new(false)),
+        }
+    }
+
+    pub fn stop_all_playback(&self) -> Result<(), String> {
+        eprintln!("stop_all_playback: Setting stop flag");
+        self.stop_flag.store(true, Ordering::Relaxed);
+        eprintln!("stop_all_playback: Stop flag set - active streams will output silence");
+        Ok(())
+    }
+
+    pub fn list_output_devices(&self) -> Result<Vec<AudioOutputDevice>, String> {
+        let devices = self
+            .host
+            .output_devices()
+            .map_err(|e| format!("Failed to enumerate output devices: {}", e))?;
+
+        let default_device = self.host.default_output_device();
+
+        let mut result = Vec::new();
+        for device in devices {
+            let name = device
+                .name()
+                .map_err(|e| format!("Failed to get device name: {}", e))?;
+
+            // Generate a stable ID from the device name (cpal doesn't provide stable IDs)
+            let id = format!("device_{}", name.replace(' ', "_").to_lowercase());
+
+            let is_default = default_device
+                .as_ref()
+                .map(|d| d.name().unwrap_or_default() == name)
+                .unwrap_or(false);
+
+            result.push(AudioOutputDevice {
+                id,
+                name,
+                is_default,
+            });
+        }
+
+        Ok(result)
+    }
+
+    pub async fn play_audio_to_devices(
+        &self,
+        audio_data: Vec<u8>,
+        device_ids: Vec<String>,
+    ) -> Result<(), String> {
+        eprintln!("play_audio_to_devices called with {} bytes, {} device IDs", audio_data.len(), device_ids.len());
+        eprintln!("Requested device IDs: {:?}", device_ids);
+        
+        // Decode audio file (assuming WAV format)
+        eprintln!("Decoding audio data...");
+        let (samples, sample_rate, channels) = self.decode_wav(&audio_data)?;
+        eprintln!("Audio decoded: {} samples, {}Hz, {} channels", samples.len(), sample_rate, channels);
+
+        // Find devices by ID
+        eprintln!("Enumerating output devices...");
+        let devices: Vec<Device> = self
+            .host
+            .output_devices()
+            .map_err(|e| format!("Failed to enumerate devices: {}", e))?
+            .filter_map(|device| {
+                let name = device.name().ok()?;
+                let id = format!("device_{}", name.replace(' ', "_").to_lowercase());
+                eprintln!("Found device: {} (id: {})", name, id);
+                if device_ids.contains(&id) {
+                    eprintln!("  -> Matched! Will play to this device");
+                    Some(device)
+                } else {
+                    None
+                }
+            })
+            .collect();
+
+        if devices.is_empty() {
+            eprintln!("ERROR: No matching devices found");
+            return Err("No matching devices found".to_string());
+        }
+
+        eprintln!("Playing to {} device(s)", devices.len());
+        
+        // Stop any existing playback first
+        self.stop_all_playback().ok();
+        
+        // Reset stop flag for new playback
+        self.stop_flag.store(false, Ordering::Relaxed);
+        
+        // Play to each device
+        for (i, device) in devices.iter().enumerate() {
+            let device_name = device.name().unwrap_or_else(|_| "unknown".to_string());
+            eprintln!("Playing to device {}/{}: {}", i + 1, devices.len(), device_name);
+            self.play_to_device(device, samples.clone(), sample_rate, channels, self.stop_flag.clone())
+                .map_err(|e| format!("Failed to play to device {}: {}", device_name, e))?;
+            eprintln!("Successfully started playback on device: {}", device_name);
+        }
+
+        eprintln!("play_audio_to_devices completed successfully");
+        Ok(())
+    }
+
+    fn decode_wav(&self, data: &[u8]) -> Result<(Vec<f32>, u32, u16), String> {
+        use symphonia::core::formats::FormatOptions;
+        use symphonia::core::io::MediaSourceStream;
+        use symphonia::core::meta::MetadataOptions;
+
+        eprintln!("decode_wav: Creating MediaSourceStream from {} bytes", data.len());
+        let mss = MediaSourceStream::new(
+            Box::new(std::io::Cursor::new(data.to_vec())),
+            Default::default(),
+        );
+
+        eprintln!("decode_wav: Probing audio format...");
+        let mut format = symphonia::default::get_probe()
+            .format(
+                &Default::default(),
+                mss,
+                &FormatOptions::default(),
+                &MetadataOptions::default(),
+            )
+            .map_err(|e| {
+                eprintln!("decode_wav: Failed to probe audio: {}", e);
+                format!("Failed to probe audio: {}", e)
+            })?
+            .format;
+        
+        eprintln!("decode_wav: Audio format probed successfully");
+
+        eprintln!("decode_wav: Finding audio track...");
+        let track = format
+            .tracks()
+            .iter()
+            .find(|t| t.codec_params.codec != symphonia::core::codecs::CODEC_TYPE_NULL)
+            .ok_or_else(|| {
+                eprintln!("decode_wav: No audio track found");
+                "No audio track found".to_string()
+            })?;
+
+        let sample_rate = track
+            .codec_params
+            .sample_rate
+            .ok_or_else(|| {
+                eprintln!("decode_wav: No sample rate found in track");
+                "No sample rate found".to_string()
+            })?;
+
+        let channels = track
+            .codec_params
+            .channels
+            .ok_or_else(|| {
+                eprintln!("decode_wav: No channels found in track");
+                "No channels found".to_string()
+            })?
+            .count() as u16;
+
+        eprintln!("decode_wav: Track info - sample_rate: {}, channels: {}", sample_rate, channels);
+
+        eprintln!("decode_wav: Creating decoder...");
+        let mut decoder = symphonia::default::get_codecs()
+            .make(&track.codec_params, &Default::default())
+            .map_err(|e| {
+                eprintln!("decode_wav: Failed to create decoder: {}", e);
+                format!("Failed to create decoder: {}", e)
+            })?;
+        
+        eprintln!("decode_wav: Decoder created successfully");
+
+        let mut samples = Vec::new();
+        let mut packet_count = 0;
+        eprintln!("decode_wav: Starting packet decoding loop...");
+        loop {
+            let packet = match format.next_packet() {
+                Ok(packet) => packet,
+                Err(e) => {
+                    eprintln!("decode_wav: End of stream or error: {:?}", e);
+                    break;
+                }
+            };
+
+            packet_count += 1;
+            let decoded = decoder
+                .decode(&packet)
+                .map_err(|e| {
+                    eprintln!("decode_wav: Decode error on packet {}: {}", packet_count, e);
+                    format!("Decode error: {}", e)
+                })?;
+
+            // Convert to f32 samples by matching on the buffer type
+            use symphonia::core::audio::{AudioBufferRef, Signal};
+            use symphonia::core::conv::FromSample;
+
+            let spec = *decoded.spec();
+            let num_channels = spec.channels.count();
+            let num_frames = decoded.frames();
+
+            eprintln!("decode_wav: Packet {} - {} frames, {} channels", packet_count, num_frames, num_channels);
+
+            // Interleave samples from all channels
+            for frame_idx in 0..num_frames {
+                for ch in 0..num_channels {
+                    let sample_f32 = match &decoded {
+                        AudioBufferRef::U8(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::U16(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::U24(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::U32(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::S8(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::S16(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::S24(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::S32(buf) => f32::from_sample(buf.chan(ch)[frame_idx]),
+                        AudioBufferRef::F32(buf) => buf.chan(ch)[frame_idx],
+                        AudioBufferRef::F64(buf) => buf.chan(ch)[frame_idx] as f32,
+                    };
+                    samples.push(sample_f32);
+                }
+            }
+        }
+
+        eprintln!("decode_wav: Decoded {} packets, total {} samples", packet_count, samples.len());
+        eprintln!("decode_wav: Returning sample_rate={}, channels={}", sample_rate, channels);
+        Ok((samples, sample_rate, channels))
+    }
+
+    fn play_to_device(
+        &self,
+        device: &Device,
+        samples: Vec<f32>,
+        sample_rate: u32,
+        channels: u16,
+        stop_flag: Arc<AtomicBool>,
+    ) -> Result<(), String> {
+        let device_name = device.name().unwrap_or_else(|_| "unknown".to_string());
+        eprintln!("play_to_device: Starting playback to device: {}", device_name);
+        eprintln!("play_to_device: Input - {} samples, {}Hz, {} channels", samples.len(), sample_rate, channels);
+        
+        let config = device
+            .default_output_config()
+            .map_err(|e| format!("Failed to get default config: {}", e))?;
+
+        // Prepare samples for the device's format
+        let device_sample_rate = config.sample_rate().0;
+        let device_channels = config.channels();
+        let device_sample_format = config.sample_format();
+        
+        eprintln!("play_to_device: Device config - {}Hz, {} channels, format: {:?}", 
+                  device_sample_rate, device_channels, device_sample_format);
+
+        // Resample if needed (simple linear interpolation for now)
+        let resampled = if device_sample_rate != sample_rate {
+            eprintln!("play_to_device: Resampling from {}Hz to {}Hz", sample_rate, device_sample_rate);
+            let result = self.resample(&samples, sample_rate, device_sample_rate);
+            eprintln!("play_to_device: Resampled {} samples to {} samples", samples.len(), result.len());
+            result
+        } else {
+            eprintln!("play_to_device: No resampling needed");
+            samples
+        };
+
+        // Interleave/convert channels if needed
+        eprintln!("play_to_device: Interleaving channels from {} to {} channels", channels, device_channels);
+        let interleaved = self.interleave_channels(&resampled, channels, device_channels);
+        eprintln!("play_to_device: Interleaved to {} samples", interleaved.len());
+
+        // Calculate duration before moving interleaved
+        let duration_secs = (interleaved.len() as f64 / (device_sample_rate as f64 * device_channels as f64)).ceil() as u64 + 1;
+
+        // Create shared buffer for playback
+        let buffer: Arc<Mutex<Vec<f32>>> = Arc::new(Mutex::new(interleaved));
+        let position = Arc::new(AtomicUsize::new(0));
+        let buffer_clone = buffer.clone();
+        let position_clone = position.clone();
+
+        let err_fn = |err| eprintln!("Playback error: {}", err);
+
+        let stream_config = StreamConfig {
+            channels: device_channels,
+            sample_rate: cpal::SampleRate(device_sample_rate),
+            buffer_size: cpal::BufferSize::Default,
+        };
+
+        let stop_flag_clone = stop_flag.clone();
+        let stream = match config.sample_format() {
+            SampleFormat::F32 => {
+                let buffer = buffer_clone.clone();
+                let pos = position_clone.clone();
+                device
+                    .build_output_stream(
+                        &stream_config,
+                        move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
+                            // Check stop flag - if set, output silence
+                            if stop_flag_clone.load(Ordering::Relaxed) {
+                                for sample in data.iter_mut() {
+                                    *sample = 0.0;
+                                }
+                                return;
+                            }
+                            
+                            let mut idx = pos.load(Ordering::Relaxed);
+                            let buf = buffer.lock().unwrap();
+                            for sample in data.iter_mut() {
+                                if idx < buf.len() {
+                                    *sample = buf[idx];
+                                    idx += 1;
+                                } else {
+                                    *sample = 0.0;
+                                }
+                            }
+                            pos.store(idx, Ordering::Relaxed);
+                        },
+                        err_fn,
+                        None,
+                    )
+                    .map_err(|e| format!("Failed to build stream: {}", e))?
+            }
+            SampleFormat::I16 => {
+                let buffer = buffer_clone.clone();
+                let pos = position_clone.clone();
+                device
+                    .build_output_stream(
+                        &stream_config,
+                        move |data: &mut [i16], _: &cpal::OutputCallbackInfo| {
+                            // Check stop flag - if set, output silence
+                            if stop_flag_clone.load(Ordering::Relaxed) {
+                                for sample in data.iter_mut() {
+                                    *sample = 0;
+                                }
+                                return;
+                            }
+                            
+                            let mut idx = pos.load(Ordering::Relaxed);
+                            let buf = buffer.lock().unwrap();
+                            for sample in data.iter_mut() {
+                                if idx < buf.len() {
+                                    *sample = (buf[idx] * 32767.0) as i16;
+                                    idx += 1;
+                                } else {
+                                    *sample = 0;
+                                }
+                            }
+                            pos.store(idx, Ordering::Relaxed);
+                        },
+                        err_fn,
+                        None,
+                    )
+                    .map_err(|e| format!("Failed to build stream: {}", e))?
+            }
+            SampleFormat::U16 => {
+                let buffer = buffer_clone.clone();
+                let pos = position_clone.clone();
+                device
+                    .build_output_stream(
+                        &stream_config,
+                        move |data: &mut [u16], _: &cpal::OutputCallbackInfo| {
+                            // Check stop flag - if set, output silence
+                            if stop_flag_clone.load(Ordering::Relaxed) {
+                                for sample in data.iter_mut() {
+                                    *sample = 32768;
+                                }
+                                return;
+                            }
+                            
+                            let mut idx = pos.load(Ordering::Relaxed);
+                            let buf = buffer.lock().unwrap();
+                            for sample in data.iter_mut() {
+                                if idx < buf.len() {
+                                    *sample = ((buf[idx] + 1.0) * 32767.5) as u16;
+                                    idx += 1;
+                                } else {
+                                    *sample = 32768;
+                                }
+                            }
+                            pos.store(idx, Ordering::Relaxed);
+                        },
+                        err_fn,
+                        None,
+                    )
+                    .map_err(|e| format!("Failed to build stream: {}", e))?
+            }
+            _ => return Err("Unsupported sample format".to_string()),
+        };
+
+        eprintln!("play_to_device: Starting stream playback...");
+        stream.play().map_err(|e| {
+            eprintln!("play_to_device: Failed to play stream: {}", e);
+            format!("Failed to play stream: {}", e)
+        })?;
+        
+        eprintln!("play_to_device: Stream started successfully");
+
+        eprintln!("play_to_device: Function completed successfully");
+        Ok(())
+    }
+
+    fn resample(&self, samples: &[f32], from_rate: u32, to_rate: u32) -> Vec<f32> {
+        if from_rate == to_rate {
+            return samples.to_vec();
+        }
+
+        let ratio = to_rate as f64 / from_rate as f64;
+        let new_len = (samples.len() as f64 * ratio) as usize;
+        let mut resampled = Vec::with_capacity(new_len);
+
+        for i in 0..new_len {
+            let src_idx = (i as f64 / ratio) as usize;
+            if src_idx < samples.len() {
+                resampled.push(samples[src_idx]);
+            } else {
+                resampled.push(0.0);
+            }
+        }
+
+        resampled
+    }
+
+    fn interleave_channels(
+        &self,
+        samples: &[f32],
+        src_channels: u16,
+        dst_channels: u16,
+    ) -> Vec<f32> {
+        if src_channels == dst_channels {
+            return samples.to_vec();
+        }
+
+        let mut interleaved = Vec::new();
+        let samples_per_channel = samples.len() / src_channels as usize;
+
+        for i in 0..samples_per_channel {
+            for ch in 0..dst_channels {
+                let src_ch = if ch < src_channels { ch } else { src_channels - 1 };
+                let idx = (i * src_channels as usize) + src_ch as usize;
+                if idx < samples.len() {
+                    interleaved.push(samples[idx]);
+                } else {
+                    interleaved.push(0.0);
+                }
+            }
+        }
+
+        interleaved
+    }
+}
+
+impl Default for AudioOutputState {
+    fn default() -> Self {
+        Self::new()
+    }
+}

tauri/src-tauri/src/main.rs

@@ -2,6 +2,7 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
 mod audio_capture;
+mod audio_output;
 
 use std::sync::Mutex;
 use tauri::{command, State, Manager, WindowEvent, Emitter, Listener, RunEvent};
@@ -368,6 +369,29 @@ fn is_system_audio_supported() -> bool {
     audio_capture::is_supported()
 }
 
+#[command]
+fn list_audio_output_devices(
+    state: State<'_, audio_output::AudioOutputState>,
+) -> Result<Vec<audio_output::AudioOutputDevice>, String> {
+    state.list_output_devices()
+}
+
+#[command]
+async fn play_audio_to_devices(
+    state: State<'_, audio_output::AudioOutputState>,
+    audio_data: Vec<u8>,
+    device_ids: Vec<String>,
+) -> Result<(), String> {
+    state.play_audio_to_devices(audio_data, device_ids).await
+}
+
+#[command]
+fn stop_audio_playback(
+    state: State<'_, audio_output::AudioOutputState>,
+) -> Result<(), String> {
+    state.stop_all_playback()
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
@@ -380,6 +404,7 @@ pub fn run() {
             keep_running_on_close: Mutex::new(false),
         })
         .manage(audio_capture::AudioCaptureState::new())
+        .manage(audio_output::AudioOutputState::new())
         .setup(|app| {
             #[cfg(desktop)]
             {
@@ -423,7 +448,10 @@ pub fn run() {
             set_keep_server_running,
             start_system_audio_capture,
             stop_system_audio_capture,
-            is_system_audio_supported
+            is_system_audio_supported,
+            list_audio_output_devices,
+            play_audio_to_devices,
+            stop_audio_playback
         ])
         .on_window_event(|window, event| {
             if let WindowEvent::CloseRequested { api, .. } = event {