fix audio overrun

src/twn_audio.c

@@ -256,6 +256,7 @@ void audio_play(const char *path,
         request.freq = AUDIO_FREQUENCY;
         request.format = AUDIO_F32;
         request.channels = 2;
+        request.samples = 4096;
         #ifndef TWN_FEATURE_PUSH_AUDIO
         request.callback = audio_callback;
         #endif