int libvlc_audio_set_volume(LibVlcInstance instance, int volume, libvlc_exception_t exception);
+ int libvlc_audio_get_track_count(LibVlcMediaInstance mediaInstance, libvlc_exception_t exception );
+
+ int libvlc_audio_get_track(LibVlcMediaInstance mediaInstance, libvlc_exception_t exception );
+
+ void libvlc_audio_set_track(LibVlcMediaInstance mediaInstance, int channel, libvlc_exception_t exception);
+
+ int libvlc_audio_get_channel(LibVlcInstance instance, libvlc_exception_t exception );
+
+ void libvlc_audio_set_channel(LibVlcInstance instance, int channel, libvlc_exception_t exception);
+
// playlist
void libvlc_playlist_loop(LibVlcInstance instance, int loop, libvlc_exception_t exception);