diff --git a/app/src/components/Generation/FloatingGenerateBox.tsx b/app/src/components/Generation/FloatingGenerateBox.tsx
index a8d556a6..bd024859 100644
--- a/app/src/components/Generation/FloatingGenerateBox.tsx
+++ b/app/src/components/Generation/FloatingGenerateBox.tsx
@@ -316,7 +316,7 @@ export function FloatingGenerateBox({
                   </span>
                 </div>
                 <AnimatePresence>
-                  {isExpanded && (
+                  {isExpanded && form.watch('engine') !== 'luxtts' && (
                     <motion.div
                       initial={{ opacity: 0, scale: 0.8 }}
                       animate={{ opacity: 1, scale: 1 }}
@@ -402,30 +402,36 @@ export function FloatingGenerateBox({
                     )}
                   />
 
-                  <FormField
-                    control={form.control}
-                    name="modelSize"
-                    render={({ field }) => (
-                      <FormItem className="flex-1 space-y-0">
-                        <Select onValueChange={field.onChange} defaultValue={field.value}>
-                          <FormControl>
-                            <SelectTrigger className="h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all">
-                              <SelectValue />
-                            </SelectTrigger>
-                          </FormControl>
-                          <SelectContent>
-                            <SelectItem value="1.7B" className="text-xs text-muted-foreground">
-                              Qwen3-TTS 1.7B
-                            </SelectItem>
-                            <SelectItem value="0.6B" className="text-xs text-muted-foreground">
-                              Qwen3-TTS 0.6B
-                            </SelectItem>
-                          </SelectContent>
-                        </Select>
-                        <FormMessage className="text-xs" />
-                      </FormItem>
-                    )}
-                  />
+                  <FormItem className="flex-1 space-y-0">
+                    <Select
+                      value={`${form.watch('engine') || 'qwen'}:${form.watch('modelSize') || '1.7B'}`}
+                      onValueChange={(value) => {
+                        const [engine, modelSize] = value.split(':');
+                        form.setValue('engine', engine as 'qwen' | 'luxtts');
+                        if (modelSize) form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
+                      }}
+                    >
+                      <FormControl>
+                        <SelectTrigger className="h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all">
+                          <SelectValue />
+                        </SelectTrigger>
+                      </FormControl>
+                      <SelectContent>
+                        <SelectItem value="qwen:1.7B" className="text-xs text-muted-foreground">
+                          Qwen3-TTS 1.7B
+                        </SelectItem>
+                        <SelectItem value="qwen:0.6B" className="text-xs text-muted-foreground">
+                          Qwen3-TTS 0.6B
+                        </SelectItem>
+                        <SelectItem
+                          value="luxtts:default"
+                          className="text-xs text-muted-foreground"
+                        >
+                          LuxTTS
+                        </SelectItem>
+                      </SelectContent>
+                    </Select>
+                  </FormItem>
                 </div>
               </motion.div>
             </AnimatePresence>
diff --git a/app/src/components/Generation/GenerationForm.tsx b/app/src/components/Generation/GenerationForm.tsx
index 2d9412f0..25709469 100644
--- a/app/src/components/Generation/GenerationForm.tsx
+++ b/app/src/components/Generation/GenerationForm.tsx
@@ -101,30 +101,33 @@ export function GenerationForm() {
             )}
 
             <div className="grid gap-4 md:grid-cols-3">
-              <FormField
-                control={form.control}
-                name="engine"
-                render={({ field }) => (
-                  <FormItem>
-                    <FormLabel>TTS Engine</FormLabel>
-                    <Select onValueChange={field.onChange} defaultValue={field.value}>
-                      <FormControl>
-                        <SelectTrigger>
-                          <SelectValue />
-                        </SelectTrigger>
-                      </FormControl>
-                      <SelectContent>
-                        <SelectItem value="qwen">Qwen TTS</SelectItem>
-                        <SelectItem value="luxtts">LuxTTS</SelectItem>
-                      </SelectContent>
-                    </Select>
-                    <FormDescription>
-                      {field.value === 'luxtts' ? 'Fast, English-focused' : 'Multi-language'}
-                    </FormDescription>
-                    <FormMessage />
-                  </FormItem>
-                )}
-              />
+              <FormItem>
+                <FormLabel>Model</FormLabel>
+                <Select
+                  value={`${form.watch('engine') || 'qwen'}:${form.watch('modelSize') || '1.7B'}`}
+                  onValueChange={(value) => {
+                    const [engine, modelSize] = value.split(':');
+                    form.setValue('engine', engine as 'qwen' | 'luxtts');
+                    if (modelSize) form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
+                  }}
+                >
+                  <FormControl>
+                    <SelectTrigger>
+                      <SelectValue />
+                    </SelectTrigger>
+                  </FormControl>
+                  <SelectContent>
+                    <SelectItem value="qwen:1.7B">Qwen3-TTS 1.7B</SelectItem>
+                    <SelectItem value="qwen:0.6B">Qwen3-TTS 0.6B</SelectItem>
+                    <SelectItem value="luxtts:default">LuxTTS</SelectItem>
+                  </SelectContent>
+                </Select>
+                <FormDescription>
+                  {form.watch('engine') === 'luxtts'
+                    ? 'Fast, English-focused'
+                    : 'Multi-language, two sizes'}
+                </FormDescription>
+              </FormItem>
 
               <FormField
                 control={form.control}
@@ -174,31 +177,6 @@ export function GenerationForm() {
               />
             </div>
 
-            {form.watch('engine') !== 'luxtts' && (
-              <FormField
-                control={form.control}
-                name="modelSize"
-                render={({ field }) => (
-                  <FormItem>
-                    <FormLabel>Model Size</FormLabel>
-                    <Select onValueChange={field.onChange} defaultValue={field.value}>
-                      <FormControl>
-                        <SelectTrigger>
-                          <SelectValue />
-                        </SelectTrigger>
-                      </FormControl>
-                      <SelectContent>
-                        <SelectItem value="1.7B">Qwen TTS 1.7B (Higher Quality)</SelectItem>
-                        <SelectItem value="0.6B">Qwen TTS 0.6B (Faster)</SelectItem>
-                      </SelectContent>
-                    </Select>
-                    <FormDescription>Larger models produce better quality</FormDescription>
-                    <FormMessage />
-                  </FormItem>
-                )}
-              />
-            )}
-
             <Button type="submit" className="w-full" disabled={isPending || !selectedProfileId}>
               {isPending ? (
                 <>
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 8611426e..e57ddd94 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -17,6 +17,8 @@ qwen-tts>=0.0.5
 # LuxTTS (voice cloning engine)
 # piper-phonemize needs custom index (no PyPI wheels)
 --find-links https://k2-fsa.github.io/icefall/piper_phonemize.html
+# linacodec is a git-only dep of Zipvoice (uv-only source, pip can't resolve it)
+linacodec @ git+https://github.com/ysharma3501/LinaCodec.git
 Zipvoice @ git+https://github.com/ysharma3501/LuxTTS.git
 
 # Audio processing
diff --git a/scripts/setup-dev-sidecar.js b/scripts/setup-dev-sidecar.js
index 6d5d5524..0fb9e327 100644
--- a/scripts/setup-dev-sidecar.js
+++ b/scripts/setup-dev-sidecar.js
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+
 /**
  * Creates placeholder sidecar binaries for development mode.
  *
@@ -9,10 +10,10 @@
  * The actual server should be started separately with `bun run dev:server`.
  */
 
-import { existsSync, mkdirSync, writeFileSync, statSync } from 'fs';
-import { join, dirname } from 'path';
-import { fileURLToPath } from 'url';
 import { execSync } from 'child_process';
+import { existsSync, mkdirSync, statSync, writeFileSync } from 'fs';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
@@ -55,7 +56,9 @@ function createPlaceholderBinary(targetTriple) {
     try {
       const stats = statSync(binaryPath);
       if (stats.size > MIN_REAL_BINARY_SIZE) {
-        console.log(`Real binary already exists: ${binaryName} (${(stats.size / 1024 / 1024).toFixed(1)} MB)`);
+        console.log(
+          `Real binary already exists: ${binaryName} (${(stats.size / 1024 / 1024).toFixed(1)} MB)`,
+        );
         return;
       }
     } catch {
@@ -73,52 +76,275 @@ function createPlaceholderBinary(targetTriple) {
     // This is the smallest valid PE that Windows will accept
     const minimalPE = Buffer.from([
       // DOS Header
-      0x4D, 0x5A, 0x90, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00,
-      0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00,
+      0x4d,
+      0x5a,
+      0x90,
+      0x00,
+      0x03,
+      0x00,
+      0x00,
+      0x00,
+      0x04,
+      0x00,
+      0x00,
+      0x00,
+      0xff,
+      0xff,
+      0x00,
+      0x00,
+      0xb8,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x40,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x80,
+      0x00,
+      0x00,
+      0x00,
       // DOS Stub
-      0x0E, 0x1F, 0xBA, 0x0E, 0x00, 0xB4, 0x09, 0xCD, 0x21, 0xB8, 0x01, 0x4C, 0xCD, 0x21, 0x54, 0x68,
-      0x69, 0x73, 0x20, 0x70, 0x72, 0x6F, 0x67, 0x72, 0x61, 0x6D, 0x20, 0x63, 0x61, 0x6E, 0x6E, 0x6F,
-      0x74, 0x20, 0x62, 0x65, 0x20, 0x72, 0x75, 0x6E, 0x20, 0x69, 0x6E, 0x20, 0x44, 0x4F, 0x53, 0x20,
-      0x6D, 0x6F, 0x64, 0x65, 0x2E, 0x0D, 0x0D, 0x0A, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+      0x0e,
+      0x1f,
+      0xba,
+      0x0e,
+      0x00,
+      0xb4,
+      0x09,
+      0xcd,
+      0x21,
+      0xb8,
+      0x01,
+      0x4c,
+      0xcd,
+      0x21,
+      0x54,
+      0x68,
+      0x69,
+      0x73,
+      0x20,
+      0x70,
+      0x72,
+      0x6f,
+      0x67,
+      0x72,
+      0x61,
+      0x6d,
+      0x20,
+      0x63,
+      0x61,
+      0x6e,
+      0x6e,
+      0x6f,
+      0x74,
+      0x20,
+      0x62,
+      0x65,
+      0x20,
+      0x72,
+      0x75,
+      0x6e,
+      0x20,
+      0x69,
+      0x6e,
+      0x20,
+      0x44,
+      0x4f,
+      0x53,
+      0x20,
+      0x6d,
+      0x6f,
+      0x64,
+      0x65,
+      0x2e,
+      0x0d,
+      0x0d,
+      0x0a,
+      0x24,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
       // PE Signature
-      0x50, 0x45, 0x00, 0x00,
+      0x50,
+      0x45,
+      0x00,
+      0x00,
       // COFF Header (x64)
-      0x64, 0x86, // Machine: AMD64
-      0x01, 0x00, // NumberOfSections: 1
-      0x00, 0x00, 0x00, 0x00, // TimeDateStamp
-      0x00, 0x00, 0x00, 0x00, // PointerToSymbolTable
-      0x00, 0x00, 0x00, 0x00, // NumberOfSymbols
-      0xF0, 0x00, // SizeOfOptionalHeader
-      0x22, 0x00, // Characteristics: EXECUTABLE_IMAGE | LARGE_ADDRESS_AWARE
+      0x64,
+      0x86, // Machine: AMD64
+      0x01,
+      0x00, // NumberOfSections: 1
+      0x00,
+      0x00,
+      0x00,
+      0x00, // TimeDateStamp
+      0x00,
+      0x00,
+      0x00,
+      0x00, // PointerToSymbolTable
+      0x00,
+      0x00,
+      0x00,
+      0x00, // NumberOfSymbols
+      0xf0,
+      0x00, // SizeOfOptionalHeader
+      0x22,
+      0x00, // Characteristics: EXECUTABLE_IMAGE | LARGE_ADDRESS_AWARE
       // Optional Header (PE32+)
-      0x0B, 0x02, // Magic: PE32+
-      0x00, 0x00, // Linker version
-      0x00, 0x00, 0x00, 0x00, // SizeOfCode
-      0x00, 0x00, 0x00, 0x00, // SizeOfInitializedData
-      0x00, 0x00, 0x00, 0x00, // SizeOfUninitializedData
-      0x00, 0x10, 0x00, 0x00, // AddressOfEntryPoint
-      0x00, 0x00, 0x00, 0x00, // BaseOfCode
-      0x00, 0x00, 0x00, 0x40, 0x01, 0x00, 0x00, 0x00, // ImageBase
-      0x00, 0x10, 0x00, 0x00, // SectionAlignment
-      0x00, 0x02, 0x00, 0x00, // FileAlignment
-      0x06, 0x00, 0x00, 0x00, // OS version
-      0x00, 0x00, 0x00, 0x00, // Image version
-      0x06, 0x00, 0x00, 0x00, // Subsystem version
-      0x00, 0x00, 0x00, 0x00, // Win32VersionValue
-      0x00, 0x20, 0x00, 0x00, // SizeOfImage
-      0x00, 0x02, 0x00, 0x00, // SizeOfHeaders
-      0x00, 0x00, 0x00, 0x00, // CheckSum
-      0x03, 0x00, // Subsystem: CONSOLE
-      0x60, 0x01, // DllCharacteristics
+      0x0b,
+      0x02, // Magic: PE32+
+      0x00,
+      0x00, // Linker version
+      0x00,
+      0x00,
+      0x00,
+      0x00, // SizeOfCode
+      0x00,
+      0x00,
+      0x00,
+      0x00, // SizeOfInitializedData
+      0x00,
+      0x00,
+      0x00,
+      0x00, // SizeOfUninitializedData
+      0x00,
+      0x10,
+      0x00,
+      0x00, // AddressOfEntryPoint
+      0x00,
+      0x00,
+      0x00,
+      0x00, // BaseOfCode
+      0x00,
+      0x00,
+      0x00,
+      0x40,
+      0x01,
+      0x00,
+      0x00,
+      0x00, // ImageBase
+      0x00,
+      0x10,
+      0x00,
+      0x00, // SectionAlignment
+      0x00,
+      0x02,
+      0x00,
+      0x00, // FileAlignment
+      0x06,
+      0x00,
+      0x00,
+      0x00, // OS version
+      0x00,
+      0x00,
+      0x00,
+      0x00, // Image version
+      0x06,
+      0x00,
+      0x00,
+      0x00, // Subsystem version
+      0x00,
+      0x00,
+      0x00,
+      0x00, // Win32VersionValue
+      0x00,
+      0x20,
+      0x00,
+      0x00, // SizeOfImage
+      0x00,
+      0x02,
+      0x00,
+      0x00, // SizeOfHeaders
+      0x00,
+      0x00,
+      0x00,
+      0x00, // CheckSum
+      0x03,
+      0x00, // Subsystem: CONSOLE
+      0x60,
+      0x01, // DllCharacteristics
       // Stack/Heap sizes (8 bytes each for PE32+)
-      0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, // LoaderFlags
-      0x10, 0x00, 0x00, 0x00, // NumberOfRvaAndSizes
+      0x00,
+      0x00,
+      0x10,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x10,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00,
+      0x00, // LoaderFlags
+      0x10,
+      0x00,
+      0x00,
+      0x00, // NumberOfRvaAndSizes
     ]);
 
     // Pad to 512 bytes minimum for valid PE
@@ -138,19 +364,8 @@ exit 1
 }
 
 function main() {
-  console.log('Setting up development sidecar...');
-  console.log('');
-
   const targetTriple = getTargetTriple();
-  console.log(`Platform: ${targetTriple}`);
-
   createPlaceholderBinary(targetTriple);
-
-  console.log('');
-  console.log('Sidecar setup complete.');
-  console.log('For development, start the Python server in a separate terminal:');
-  console.log('  bun run dev:server');
-  console.log('');
 }
 
 main();