SoundExtension is a native extension to navigate iOS music player, navigate the device volume and listen to the remote controller. It allows the application to monitor changes in the player status, such as a new audio route (headphone, speaker, etc).

It is also possible to control the music playback, navigate among the songs using goToNext() and goToPrev(). There is a specific iPod API to control sound.

Sample

var sundex:SoundExtension=null;
if(SoundExtension.isSupported()){
    soundex= new SoundExtension();

    soundExt.addEventListener(SoundExtensionEvent.IPOD_STATE_CHANGED,onStatus);
    soundExt.addEventListener(SoundExtensionEvent.REMOTE_CHANGE,onStatus);
    soundExt.addEventListener(DeviceVolumeChangeEvent.VOLUME_CHANGED,onVolumeChange);

    soundExt.start();//starts the native listeners
    trace("volume: "+soundex.setVolume(0.1));//volume is between 0-1
    trace("AudioRoute is   "+soundExt.getAudioRoute()+"\n")
}
protected function onStatus(event:StatusEvent):void
{
    trace(event.code+"    "+event.level+"\n");
}