feat(audio): wire Mp3FormatDecoder and FlacFormatDecoder into AudioPlayer factory

DeepDrftPublic/Interop/audio/AudioPlayer.ts

@@ -12,6 +12,8 @@ import { StreamDecoder } from './StreamDecoder.js';
 import { PlaybackScheduler } from './PlaybackScheduler.js';
 import { IFormatDecoder } from './IFormatDecoder.js';
 import { WavFormatDecoder } from './WavFormatDecoder.js';
+import { Mp3FormatDecoder } from './Mp3FormatDecoder.js';
+import { FlacFormatDecoder } from './FlacFormatDecoder.js';
 
 export interface AudioResult {
     success: boolean;
@@ -110,13 +112,16 @@ export class AudioPlayer {
     }
 
     /**
-     * Select a format decoder from the response Content-Type. MP3 and FLAC decoders
-     * arrive in Wave 2; until then every format falls back to WAV. When Wave 2 lands,
-     * add the MP3/FLAC branches here, e.g.:
-     *   if (contentType.includes('audio/mpeg')) return new Mp3FormatDecoder();
+     * Select a format decoder from the response Content-Type.
      */
-    private static createFormatDecoder(_contentType: string): IFormatDecoder {
-        return new WavFormatDecoder();
+    private static createFormatDecoder(contentType: string): IFormatDecoder {
+        if (contentType.includes('audio/mpeg') || contentType.includes('audio/mp3')) {
+            return new Mp3FormatDecoder();
+        }
+        if (contentType.includes('audio/flac') || contentType.includes('audio/x-flac')) {
+            return new FlacFormatDecoder();
+        }
+        return new WavFormatDecoder(); // default (audio/wav, unknown)
     }
 
     /**