Enhance audio sample handling in ProfileForm and SampleUpload components

- Introduced play/pause functionality for audio samples, allowing users to preview uploaded audio files.
- Added drag-and-drop support for file uploads, improving user experience when selecting audio files.
- Refactored audio validation and error handling to ensure proper feedback for audio file requirements.
- Updated UI elements for better clarity and consistency in audio file management.

app/src/components/VoiceProfiles/ProfileForm.tsx

@@ -1,5 +1,5 @@
 import { zodResolver } from '@hookform/resolvers/zod';
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useRef } from 'react';
 import { useForm } from 'react-hook-form';
 import * as z from 'zod';
 import { Button } from '@/components/ui/button';
@@ -13,7 +13,6 @@ import {
 import {
   Form,
   FormControl,
-  FormDescription,
   FormField,
   FormItem,
   FormLabel,
@@ -41,7 +40,7 @@ import { useTranscription } from '@/lib/hooks/useTranscription';
 import { useAudioRecording } from '@/lib/hooks/useAudioRecording';
 import { useSystemAudioCapture } from '@/lib/hooks/useSystemAudioCapture';
 import { useUIStore } from '@/stores/uiStore';
-import { Mic, Square, Upload, Monitor } from 'lucide-react';
+import { Mic, Square, Upload, Monitor, Play, Pause } from 'lucide-react';
 import { formatAudioDuration } from '@/lib/utils/audio';
 import { isTauri } from '@/lib/tauri';
 
@@ -79,16 +78,15 @@ async function getAudioDuration(file: File & { recordedDuration?: number }): Pro
 
 const MAX_AUDIO_DURATION_SECONDS = 30;
 
-const profileSchema = z
+const baseProfileSchema = z.object({
-  .object({
   name: z.string().min(1, 'Name is required').max(100),
   description: z.string().max(500).optional(),
   language: z.enum(LANGUAGE_CODES as [LanguageCode, ...LanguageCode[]]),
-    // Sample fields - only required when creating (not editing)
   sampleFile: z.instanceof(File).optional(),
   referenceText: z.string().max(1000).optional(),
-  })
+});
-  .refine(
+
+const profileSchema = baseProfileSchema.refine(
   (data) => {
     // If sample file is provided, reference text is required
     if (data.sampleFile && (!data.referenceText || data.referenceText.trim().length === 0)) {
@@ -100,7 +98,7 @@ const profileSchema = z
     message: 'Reference text is required when adding a sample',
     path: ['referenceText'],
   },
-  );
+);
 
 type ProfileFormValues = z.infer<typeof profileSchema>;
 
@@ -118,6 +116,10 @@ export function ProfileForm() {
   const [sampleMode, setSampleMode] = useState<'upload' | 'record' | 'system'>('upload');
   const [audioDuration, setAudioDuration] = useState<number | null>(null);
   const [isValidatingAudio, setIsValidatingAudio] = useState(false);
+  const [isDragging, setIsDragging] = useState(false);
+  const [isPlaying, setIsPlaying] = useState(false);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const audioRef = useRef<HTMLAudioElement | null>(null);
   const isCreating = !editingProfileId;
 
   const form = useForm<ProfileFormValues>({
@@ -126,6 +128,8 @@ export function ProfileForm() {
       name: '',
       description: '',
       language: 'en',
+      sampleFile: undefined,
+      referenceText: '',
     },
   });
 
@@ -303,6 +307,54 @@ export function ProfileForm() {
       cancelSystemRecording();
     }
     form.resetField('sampleFile');
+    // Stop any playing audio
+    if (audioRef.current) {
+      audioRef.current.pause();
+      audioRef.current = null;
+    }
+    setIsPlaying(false);
+  }
+
+  function handlePlayPause() {
+    const file = form.getValues('sampleFile');
+    if (!file) return;
+
+    if (audioRef.current) {
+      if (isPlaying) {
+        audioRef.current.pause();
+        setIsPlaying(false);
+      } else {
+        audioRef.current.play();
+        setIsPlaying(true);
+      }
+    } else {
+      const audio = new Audio(URL.createObjectURL(file));
+      audioRef.current = audio;
+      
+      audio.addEventListener('ended', () => {
+        setIsPlaying(false);
+        if (audioRef.current) {
+          URL.revokeObjectURL(audioRef.current.src);
+        }
+        audioRef.current = null;
+      });
+
+      audio.addEventListener('error', () => {
+        setIsPlaying(false);
+        toast({
+          title: 'Playback error',
+          description: 'Failed to play audio file',
+          variant: 'destructive',
+        });
+        if (audioRef.current) {
+          URL.revokeObjectURL(audioRef.current.src);
+        }
+        audioRef.current = null;
+      });
+
+      audio.play();
+      setIsPlaying(true);
+    }
   }
 
   async function onSubmit(data: ProfileFormValues) {
@@ -322,12 +374,37 @@ export function ProfileForm() {
           description: `"${data.name}" has been updated successfully.`,
         });
       } else {
-        // Get file and reference text directly from form state to ensure we have the values
+        // Creating: require sample file and reference text
         const sampleFile = form.getValues('sampleFile');
         const referenceText = form.getValues('referenceText');
 
+        if (!sampleFile) {
+          form.setError('sampleFile', {
+            type: 'manual',
+            message: 'Audio sample is required',
+          });
+          toast({
+            title: 'Audio sample required',
+            description: 'Please provide an audio sample to create the voice profile.',
+            variant: 'destructive',
+          });
+          return;
+        }
+
+        if (!referenceText || referenceText.trim().length === 0) {
+          form.setError('referenceText', {
+            type: 'manual',
+            message: 'Reference text is required',
+          });
+          toast({
+            title: 'Reference text required',
+            description: 'Please provide the reference text for the audio sample.',
+            variant: 'destructive',
+          });
+          return;
+        }
+
         // Validate audio duration before creating profile
-        if (sampleFile) {
         try {
           const duration = await getAudioDuration(sampleFile);
           if (duration > MAX_AUDIO_DURATION_SECONDS) {
@@ -354,17 +431,14 @@ export function ProfileForm() {
           });
           return; // Prevent form submission
         }
-        }
 
-        // Creating: create profile, then optionally add sample
+        // Creating: create profile, then add sample
         const profile = await createProfile.mutateAsync({
           name: data.name,
           description: data.description,
           language: data.language,
         });
 
-        // If sample file and reference text provided, add it
-        if (sampleFile && referenceText && referenceText.trim().length > 0) {
         try {
           await addSample.mutateAsync({
             profileId: profile.id,
@@ -376,19 +450,13 @@ export function ProfileForm() {
             description: `"${data.name}" has been created with a sample.`,
           });
         } catch (sampleError) {
-            // Profile was created but sample failed - still show success for profile
+          // Profile was created but sample failed - still show error
           toast({
-              title: 'Profile created',
+            title: 'Failed to add sample',
-              description: `"${data.name}" has been created, but failed to add sample: ${sampleError instanceof Error ? sampleError.message : 'Unknown error'}`,
+            description: `Profile "${data.name}" was created, but failed to add sample: ${sampleError instanceof Error ? sampleError.message : 'Unknown error'}`,
             variant: 'destructive',
           });
         }
-        } else {
-          toast({
-            title: 'Profile created',
-            description: `"${data.name}" has been created successfully. You can add samples later.`,
-          });
-        }
       }
 
       form.reset();
@@ -415,6 +483,13 @@ export function ProfileForm() {
       if (isSystemRecording) {
         cancelSystemRecording();
       }
+      // Stop and cleanup audio
+      if (audioRef.current) {
+        audioRef.current.pause();
+        URL.revokeObjectURL(audioRef.current.src);
+        audioRef.current = null;
+      }
+      setIsPlaying(false);
     }
   }
 
@@ -426,7 +501,7 @@ export function ProfileForm() {
           <DialogDescription>
             {editingProfileId
               ? 'Update your voice profile details.'
-              : 'Create a new voice profile. You can add a sample now or later.'}
+              : 'Create a new voice profile with an audio sample to clone the voice.'}
           </DialogDescription>
         </DialogHeader>
 
@@ -493,10 +568,9 @@ export function ProfileForm() {
               {isCreating && (
                 <div className="space-y-4 border-l pl-6">
                   <div>
-                    <h3 className="text-sm font-medium mb-2">Add Sample (Optional)</h3>
+                    <h3 className="text-sm font-medium mb-2">Add Sample</h3>
                     <p className="text-sm text-muted-foreground mb-4">
-                      Add an audio sample to get started immediately. You can add more samples
+                      Provide an audio sample to clone the voice. You can add more samples later.
-                      later.
                     </p>
                   </div>
 
@@ -516,16 +590,16 @@ export function ProfileForm() {
                   >
                     <TabsList className={`grid w-full ${isTauri() && isSystemAudioSupported ? 'grid-cols-3' : 'grid-cols-2'}`}>
                       <TabsTrigger value="upload" className="flex items-center gap-2">
-                        <Upload className="h-4 w-4" />
+                        <Upload className="h-4 w-4 shrink-0" />
                         Upload
                       </TabsTrigger>
                       <TabsTrigger value="record" className="flex items-center gap-2">
-                        <Mic className="h-4 w-4" />
+                        <Mic className="h-4 w-4 shrink-0" />
                         Record
                       </TabsTrigger>
                       {isTauri() && isSystemAudioSupported && (
                         <TabsTrigger value="system" className="flex items-center gap-2">
-                          <Monitor className="h-4 w-4" />
+                          <Monitor className="h-4 w-4 shrink-0" />
                           System Audio
                         </TabsTrigger>
                       )}
@@ -535,16 +609,16 @@ export function ProfileForm() {
                       <FormField
                         control={form.control}
                         name="sampleFile"
-                        render={({ field: { onChange, name, ref } }) => (
+                        render={({ field: { onChange, name } }) => (
                           <FormItem>
                             <FormLabel>Audio File</FormLabel>
                             <FormControl>
                               <div className="flex flex-col gap-2">
-                                <Input
+                                <input
                                   type="file"
                                   accept="audio/*"
                                   name={name}
-                                  ref={ref}
+                                  ref={fileInputRef}
                                   onChange={(e) => {
                                     const file = e.target.files?.[0];
                                     if (file) {
@@ -553,50 +627,103 @@ export function ProfileForm() {
                                       onChange(undefined);
                                     }
                                   }}
+                                  className="hidden"
                                 />
-                                {selectedFile && (
+                                <div
-                                  <>
+                                  role="button"
-                                    {isValidatingAudio && (
+                                  tabIndex={0}
-                                      <p className="text-sm text-muted-foreground">
+                                  onDragOver={(e) => {
-                                        Validating audio...
+                                    e.preventDefault();
-                                      </p>
+                                    setIsDragging(true);
-                                    )}
+                                  }}
-                                    {!isValidatingAudio && audioDuration !== null && (
+                                  onDragLeave={(e) => {
-                                      <div className="flex items-center gap-2 text-sm">
+                                    e.preventDefault();
-                                        <span className="text-muted-foreground">Duration:</span>
+                                    setIsDragging(false);
-                                        <span
+                                  }}
-                                          className={
+                                  onDrop={(e) => {
-                                            audioDuration > MAX_AUDIO_DURATION_SECONDS
+                                    e.preventDefault();
-                                              ? 'text-destructive font-medium'
+                                    setIsDragging(false);
-                                              : 'text-foreground'
+                                    const file = e.dataTransfer.files?.[0];
+                                    if (file && file.type.startsWith('audio/')) {
+                                      onChange(file);
                                     }
+                                  }}
+                                  onKeyDown={(e) => {
+                                    if (e.key === 'Enter' || e.key === ' ') {
+                                      e.preventDefault();
+                                      fileInputRef.current?.click();
+                                    }
+                                  }}
+                                  className={`flex flex-col items-center justify-center gap-4 p-4 border-2 rounded-lg transition-colors min-h-[180px] ${
+                                    selectedFile
+                                      ? 'border-primary bg-primary/5'
+                                      : isDragging
+                                        ? 'border-primary bg-primary/5'
+                                        : 'border-dashed border-muted-foreground/25 hover:border-muted-foreground/50'
+                                  }`}
                                 >
-                                          {formatAudioDuration(audioDuration)}
+                                  {!selectedFile ? (
-                                        </span>
+                                    <>
-                                        <span className="text-muted-foreground">
+                                      <Button
-                                          / {formatAudioDuration(MAX_AUDIO_DURATION_SECONDS)} max
+                                        type="button"
-                                        </span>
+                                        size="lg"
+                                        onClick={() => fileInputRef.current?.click()}
+                                        className="flex items-center gap-2"
+                                      >
+                                        <Upload className="h-5 w-5" />
+                                        Choose File
+                                      </Button>
+                                      <p className="text-sm text-muted-foreground text-center">
+                                        Click to choose a file or drag and drop. Maximum duration: 30 seconds.
+                                      </p>
+                                    </>
+                                  ) : (
+                                    <>
+                                      <div className="flex items-center gap-2">
+                                        <Upload className="h-5 w-5 text-primary" />
+                                        <span className="font-medium">File uploaded</span>
                                       </div>
-                                    )}
+                                      <p className="text-sm text-muted-foreground text-center">
+                                        File: {selectedFile.name}
+                                      </p>
+                                      <div className="flex gap-2">
+                                        <Button
+                                          type="button"
+                                          size="icon"
+                                          variant="outline"
+                                          onClick={handlePlayPause}
+                                          disabled={isValidatingAudio}
+                                        >
+                                          {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                        </Button>
                                         <Button
                                           type="button"
                                           variant="outline"
                                           onClick={handleTranscribe}
                                           disabled={transcribe.isPending || isValidatingAudio || (audioDuration !== null && audioDuration > MAX_AUDIO_DURATION_SECONDS)}
-                                      className="flex items-center gap-2 w-full"
+                                          className="flex items-center gap-2"
                                         >
                                           <Mic className="h-4 w-4" />
                                           {transcribe.isPending ? 'Transcribing...' : 'Transcribe'}
                                         </Button>
+                                        <Button
+                                          type="button"
+                                          variant="outline"
+                                          onClick={() => {
+                                            onChange(undefined);
+                                            if (fileInputRef.current) {
+                                              fileInputRef.current.value = '';
+                                            }
+                                          }}
+                                        >
+                                          Remove
+                                        </Button>
+                                      </div>
                                     </>
                                   )}
                                 </div>
+                              </div>
                             </FormControl>
-                            <FormDescription>
-                              Supported formats: WAV, MP3, M4A. Maximum duration:{' '}
-                              {formatAudioDuration(MAX_AUDIO_DURATION_SECONDS)}. Click "Transcribe"
-                              to automatically extract text from the audio.
-                            </FormDescription>
                             <FormMessage />
                           </FormItem>
                         )}
@@ -613,7 +740,7 @@ export function ProfileForm() {
                             <FormControl>
                               <div className="space-y-4">
                                 {!isRecording && !selectedFile && (
-                                  <div className="flex flex-col items-center gap-4 p-4 border-2 border-dashed rounded-lg">
+                                  <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px]">
                                     <Button
                                       type="button"
                                       onClick={startRecording}
@@ -630,7 +757,7 @@ export function ProfileForm() {
                                 )}
 
                                 {isRecording && (
-                                  <div className="flex flex-col items-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5">
+                                  <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5 min-h-[180px]">
                                     <div className="flex items-center gap-4">
                                       <div className="flex items-center gap-2">
                                         <div className="h-3 w-3 rounded-full bg-destructive animate-pulse" />
@@ -649,14 +776,13 @@ export function ProfileForm() {
                                       Stop Recording
                                     </Button>
                                     <p className="text-sm text-muted-foreground text-center">
-                                      Recording in progress... ({formatAudioDuration(30 - duration)}{' '}
+                                      {formatAudioDuration(30 - duration)} remaining
-                                      remaining)
                                     </p>
                                   </div>
                                 )}
 
                                 {selectedFile && !isRecording && (
-                                  <div className="flex flex-col items-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5">
+                                  <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
                                     <div className="flex items-center gap-2">
                                       <Mic className="h-5 w-5 text-primary" />
                                       <span className="font-medium">Recording complete</span>
@@ -665,6 +791,14 @@ export function ProfileForm() {
                                       File: {selectedFile.name}
                                     </p>
                                     <div className="flex gap-2">
+                                      <Button
+                                        type="button"
+                                        size="icon"
+                                        variant="outline"
+                                        onClick={handlePlayPause}
+                                      >
+                                        {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                      </Button>
                                       <Button
                                         type="button"
                                         variant="outline"
@@ -688,10 +822,6 @@ export function ProfileForm() {
                                 )}
                               </div>
                             </FormControl>
-                            <FormDescription>
-                              Record audio directly from your microphone. Maximum duration is 30
-                              seconds.
-                            </FormDescription>
                             <FormMessage />
                           </FormItem>
                         )}
@@ -709,7 +839,7 @@ export function ProfileForm() {
                               <FormControl>
                                 <div className="space-y-4">
                                   {!isSystemRecording && !selectedFile && (
-                                    <div className="flex flex-col items-center gap-4 p-4 border-2 border-dashed rounded-lg">
+                                    <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px]">
                                       <Button
                                         type="button"
                                         onClick={startSystemRecording}
@@ -726,7 +856,7 @@ export function ProfileForm() {
                                   )}
 
                                   {isSystemRecording && (
-                                    <div className="flex flex-col items-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5">
+                                    <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5 min-h-[180px]">
                                       <div className="flex items-center gap-4">
                                         <div className="flex items-center gap-2">
                                           <div className="h-3 w-3 rounded-full bg-destructive animate-pulse" />
@@ -745,14 +875,13 @@ export function ProfileForm() {
                                         Stop Capture
                                       </Button>
                                       <p className="text-sm text-muted-foreground text-center">
-                                        Capturing system audio... ({formatAudioDuration(30 - systemDuration)}{' '}
+                                        {formatAudioDuration(30 - systemDuration)} remaining
-                                        remaining)
                                       </p>
                                     </div>
                                   )}
 
                                   {selectedFile && !isSystemRecording && (
-                                    <div className="flex flex-col items-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5">
+                                    <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
                                       <div className="flex items-center gap-2">
                                         <Monitor className="h-5 w-5 text-primary" />
                                         <span className="font-medium">Capture complete</span>
@@ -761,6 +890,14 @@ export function ProfileForm() {
                                         File: {selectedFile.name}
                                       </p>
                                       <div className="flex gap-2">
+                                        <Button
+                                          type="button"
+                                          size="icon"
+                                          variant="outline"
+                                          onClick={handlePlayPause}
+                                        >
+                                          {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                        </Button>
                                         <Button
                                           type="button"
                                           variant="outline"
@@ -784,10 +921,6 @@ export function ProfileForm() {
                                   )}
                                 </div>
                               </FormControl>
-                              <FormDescription>
-                                Capture audio from your system (speakers, applications). Maximum duration is 30
-                                seconds.
-                              </FormDescription>
                               <FormMessage />
                             </FormItem>
                           )}
@@ -809,10 +942,6 @@ export function ProfileForm() {
                             {...field}
                           />
                         </FormControl>
-                        <FormDescription>
-                          This should match exactly what is spoken in the audio file. Required if
-                          you add a sample.
-                        </FormDescription>
                         <FormMessage />
                       </FormItem>
                     )}

app/src/components/VoiceProfiles/SampleUpload.tsx

@@ -1,6 +1,6 @@
 import { zodResolver } from '@hookform/resolvers/zod';
 import { useForm } from 'react-hook-form';
-import { useState, useEffect } from 'react';
+import { useState, useEffect, useRef } from 'react';
 import * as z from 'zod';
 import { Button } from '@/components/ui/button';
 import {
@@ -13,13 +13,11 @@ import {
 import {
   Form,
   FormControl,
-  FormDescription,
   FormField,
   FormItem,
   FormLabel,
   FormMessage,
 } from '@/components/ui/form';
-import { Input } from '@/components/ui/input';
 import { Textarea } from '@/components/ui/textarea';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { useToast } from '@/components/ui/use-toast';
@@ -27,7 +25,7 @@ import { useAddSample, useProfile } from '@/lib/hooks/useProfiles';
 import { useTranscription } from '@/lib/hooks/useTranscription';
 import { useAudioRecording } from '@/lib/hooks/useAudioRecording';
 import { useSystemAudioCapture } from '@/lib/hooks/useSystemAudioCapture';
-import { Mic, Square, Upload, Monitor } from 'lucide-react';
+import { Mic, Square, Upload, Monitor, Play, Pause } from 'lucide-react';
 import { formatAudioDuration } from '@/lib/utils/audio';
 import { isTauri } from '@/lib/tauri';
 
@@ -53,6 +51,10 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
   const { data: profile } = useProfile(profileId);
   const { toast } = useToast();
   const [mode, setMode] = useState<'upload' | 'record' | 'system'>('upload');
+  const [isDragging, setIsDragging] = useState(false);
+  const [isPlaying, setIsPlaying] = useState(false);
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const audioRef = useRef<HTMLAudioElement | null>(null);
 
   const form = useForm<SampleFormValues>({
     resolver: zodResolver(sampleSchema),
@@ -201,6 +203,13 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
       if (isSystemRecording) {
         cancelSystemRecording();
       }
+      // Stop and cleanup audio
+      if (audioRef.current) {
+        audioRef.current.pause();
+        URL.revokeObjectURL(audioRef.current.src);
+        audioRef.current = null;
+      }
+      setIsPlaying(false);
     }
     onOpenChange(newOpen);
   }
@@ -213,6 +222,54 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
     }
     // Reset file field by clearing the input
     form.resetField('file');
+    // Stop any playing audio
+    if (audioRef.current) {
+      audioRef.current.pause();
+      audioRef.current = null;
+    }
+    setIsPlaying(false);
+  }
+
+  function handlePlayPause() {
+    const file = form.getValues('file');
+    if (!file) return;
+
+    if (audioRef.current) {
+      if (isPlaying) {
+        audioRef.current.pause();
+        setIsPlaying(false);
+      } else {
+        audioRef.current.play();
+        setIsPlaying(true);
+      }
+    } else {
+      const audio = new Audio(URL.createObjectURL(file));
+      audioRef.current = audio;
+      
+      audio.addEventListener('ended', () => {
+        setIsPlaying(false);
+        if (audioRef.current) {
+          URL.revokeObjectURL(audioRef.current.src);
+        }
+        audioRef.current = null;
+      });
+
+      audio.addEventListener('error', () => {
+        setIsPlaying(false);
+        toast({
+          title: 'Playback error',
+          description: 'Failed to play audio file',
+          variant: 'destructive',
+        });
+        if (audioRef.current) {
+          URL.revokeObjectURL(audioRef.current.src);
+        }
+        audioRef.current = null;
+      });
+
+      audio.play();
+      setIsPlaying(true);
+    }
   }
 
   return (
@@ -235,16 +292,16 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                 className={`grid w-full ${isTauri() && isSystemAudioSupported ? 'grid-cols-3' : 'grid-cols-2'}`}
               >
                 <TabsTrigger value="upload" className="flex items-center gap-2">
-                  <Upload className="h-4 w-4" />
+                  <Upload className="h-4 w-4 shrink-0" />
                   Upload
                 </TabsTrigger>
                 <TabsTrigger value="record" className="flex items-center gap-2">
-                  <Mic className="h-4 w-4" />
+                  <Mic className="h-4 w-4 shrink-0" />
                   Record
                 </TabsTrigger>
                 {isTauri() && isSystemAudioSupported && (
                   <TabsTrigger value="system" className="flex items-center gap-2">
-                    <Monitor className="h-4 w-4" />
+                    <Monitor className="h-4 w-4 shrink-0" />
                     System Audio
                   </TabsTrigger>
                 )}
@@ -254,23 +311,90 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                 <FormField
                   control={form.control}
                   name="file"
-                  render={({ field: { onChange, value, ...field } }) => (
+                  render={({ field: { onChange, name } }) => (
                     <FormItem>
                       <FormLabel>Audio File</FormLabel>
                       <FormControl>
-                        <div className="flex items-center gap-2">
+                        <div className="flex flex-col gap-2">
-                          <Input
+                          <input
                             type="file"
                             accept="audio/*"
+                            name={name}
+                            ref={fileInputRef}
                             onChange={(e) => {
                               const file = e.target.files?.[0];
                               if (file) {
                                 onChange(file);
                               }
                             }}
-                            {...field}
+                            className="hidden"
                           />
-                          {selectedFile && (
+                          <div
+                            role="button"
+                            tabIndex={0}
+                            onDragOver={(e) => {
+                              e.preventDefault();
+                              setIsDragging(true);
+                            }}
+                            onDragLeave={(e) => {
+                              e.preventDefault();
+                              setIsDragging(false);
+                            }}
+                            onDrop={(e) => {
+                              e.preventDefault();
+                              setIsDragging(false);
+                              const file = e.dataTransfer.files?.[0];
+                              if (file && file.type.startsWith('audio/')) {
+                                onChange(file);
+                              }
+                            }}
+                            onKeyDown={(e) => {
+                              if (e.key === 'Enter' || e.key === ' ') {
+                                e.preventDefault();
+                                fileInputRef.current?.click();
+                              }
+                            }}
+                            className={`flex flex-col items-center justify-center gap-4 p-4 border-2 rounded-lg transition-colors min-h-[180px] ${
+                              selectedFile
+                                ? 'border-primary bg-primary/5'
+                                : isDragging
+                                  ? 'border-primary bg-primary/5'
+                                  : 'border-dashed border-muted-foreground/25 hover:border-muted-foreground/50'
+                            }`}
+                          >
+                            {!selectedFile ? (
+                              <>
+                                <Button
+                                  type="button"
+                                  size="lg"
+                                  onClick={() => fileInputRef.current?.click()}
+                                  className="flex items-center gap-2"
+                                >
+                                  <Upload className="h-5 w-5" />
+                                  Choose File
+                                </Button>
+                                <p className="text-sm text-muted-foreground text-center">
+                                  Click to choose a file or drag and drop. Maximum duration: 30 seconds.
+                                </p>
+                              </>
+                            ) : (
+                              <>
+                                <div className="flex items-center gap-2">
+                                  <Upload className="h-5 w-5 text-primary" />
+                                  <span className="font-medium">File uploaded</span>
+                                </div>
+                                <p className="text-sm text-muted-foreground text-center">
+                                  File: {selectedFile.name}
+                                </p>
+                                <div className="flex gap-2">
+                                  <Button
+                                    type="button"
+                                    size="icon"
+                                    variant="outline"
+                                    onClick={handlePlayPause}
+                                  >
+                                    {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                  </Button>
                                   <Button
                                     type="button"
                                     variant="outline"
@@ -281,13 +405,24 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                                     <Mic className="h-4 w-4" />
                                     {transcribe.isPending ? 'Transcribing...' : 'Transcribe'}
                                   </Button>
+                                  <Button
+                                    type="button"
+                                    variant="outline"
+                                    onClick={() => {
+                                      onChange(undefined);
+                                      if (fileInputRef.current) {
+                                        fileInputRef.current.value = '';
+                                      }
+                                    }}
+                                  >
+                                    Remove
+                                  </Button>
+                                </div>
+                              </>
                             )}
                           </div>
+                        </div>
                       </FormControl>
-                      <FormDescription>
-                        Supported formats: WAV, MP3, M4A. Click "Transcribe" to automatically
-                        extract text from the audio.
-                      </FormDescription>
                       <FormMessage />
                     </FormItem>
                   )}
@@ -304,7 +439,7 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                       <FormControl>
                         <div className="space-y-4">
                           {!isRecording && !selectedFile && (
-                            <div className="flex flex-col items-center gap-4 p-6 border-2 border-dashed rounded-lg">
+                            <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px]">
                               <Button
                                 type="button"
                                 onClick={startRecording}
@@ -321,7 +456,7 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                           )}
 
                           {isRecording && (
-                            <div className="flex flex-col items-center gap-4 p-6 border-2 border-destructive rounded-lg bg-destructive/5">
+                            <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5 min-h-[180px]">
                               <div className="flex items-center gap-4">
                                 <div className="flex items-center gap-2">
                                   <div className="h-3 w-3 rounded-full bg-destructive animate-pulse" />
@@ -340,14 +475,13 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                                 Stop Recording
                               </Button>
                               <p className="text-sm text-muted-foreground text-center">
-                                Recording in progress... ({formatAudioDuration(30 - duration)}{' '}
+                                {formatAudioDuration(30 - duration)} remaining
-                                remaining)
                               </p>
                             </div>
                           )}
 
                           {selectedFile && !isRecording && (
-                            <div className="flex flex-col items-center gap-4 p-6 border-2 border-primary rounded-lg bg-primary/5">
+                            <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
                               <div className="flex items-center gap-2">
                                 <Mic className="h-5 w-5 text-primary" />
                                 <span className="font-medium">Recording complete</span>
@@ -356,6 +490,14 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                                 File: {selectedFile.name}
                               </p>
                               <div className="flex gap-2">
+                                <Button
+                                  type="button"
+                                  size="icon"
+                                  variant="outline"
+                                  onClick={handlePlayPause}
+                                >
+                                  {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                </Button>
                                 <Button
                                   type="button"
                                   variant="outline"
@@ -379,9 +521,6 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                           )}
                         </div>
                       </FormControl>
-                      <FormDescription>
-                        Record audio directly from your microphone. Maximum duration is 30 seconds.
-                      </FormDescription>
                       <FormMessage />
                     </FormItem>
                   )}
@@ -399,7 +538,7 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                         <FormControl>
                           <div className="space-y-4">
                             {!isSystemRecording && !selectedFile && (
-                              <div className="flex flex-col items-center gap-4 p-6 border-2 border-dashed rounded-lg">
+                              <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px]">
                                 <Button
                                   type="button"
                                   onClick={startSystemRecording}
@@ -416,7 +555,7 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                             )}
 
                             {isSystemRecording && (
-                              <div className="flex flex-col items-center gap-4 p-6 border-2 border-destructive rounded-lg bg-destructive/5">
+                              <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-destructive rounded-lg bg-destructive/5 min-h-[180px]">
                                 <div className="flex items-center gap-4">
                                   <div className="flex items-center gap-2">
                                     <div className="h-3 w-3 rounded-full bg-destructive animate-pulse" />
@@ -435,14 +574,13 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                                   Stop Capture
                                 </Button>
                                 <p className="text-sm text-muted-foreground text-center">
-                                  Capturing system audio... ({formatAudioDuration(30 - systemDuration)}{' '}
+                                  {formatAudioDuration(30 - systemDuration)} remaining
-                                  remaining)
                                 </p>
                               </div>
                             )}
 
                             {selectedFile && !isSystemRecording && mode === 'system' && (
-                              <div className="flex flex-col items-center gap-4 p-6 border-2 border-primary rounded-lg bg-primary/5">
+                              <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
                                 <div className="flex items-center gap-2">
                                   <Monitor className="h-5 w-5 text-primary" />
                                   <span className="font-medium">Capture complete</span>
@@ -451,6 +589,14 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                                   File: {selectedFile.name}
                                 </p>
                                 <div className="flex gap-2">
+                                  <Button
+                                    type="button"
+                                    size="icon"
+                                    variant="outline"
+                                    onClick={handlePlayPause}
+                                  >
+                                    {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
+                                  </Button>
                                   <Button
                                     type="button"
                                     variant="outline"
@@ -474,10 +620,6 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                             )}
                           </div>
                         </FormControl>
-                        <FormDescription>
-                          Capture audio from your system (applications, browser tabs, etc.). Works
-                          natively without browser dialogs.
-                        </FormDescription>
                         <FormMessage />
                       </FormItem>
                     )}
@@ -499,9 +641,6 @@ export function SampleUpload({ profileId, open, onOpenChange }: SampleUploadProp
                       {...field}
                     />
                   </FormControl>
-                  <FormDescription>
-                    This should match exactly what is spoken in the audio file.
-                  </FormDescription>
                   <FormMessage />
                 </FormItem>
               )}