TraitEventDispatcher  - AS3 OSMF

package
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    
    import org.osmf.elements.VideoElement;
    import org.osmf.events.AudioEvent;
    import org.osmf.events.PlayEvent;
    import org.osmf.media.MediaPlayerSprite;
    import org.osmf.media.URLResource;
    import org.osmf.traits.TraitEventDispatcher;
    
    public class TraitEventDispatcherExample extends Sprite
    {
        public function TraitEventDispatcherExample()
        {
            super();
            
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;
            
            var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite();
            var urlResource:URLResource = new URLResource("rtmp://cp67126.edgefcs.net/ondemand/mediapm/strobe/content/test/SpaceAloneHD_sounas_640_500_short");
            var videoElement:VideoElement = new VideoElement();
            videoElement.resource = urlResource;

            var dispatcher:TraitEventDispatcher = new TraitEventDispatcher();
            dispatcher.media = videoElement;
                        
            dispatcher.addEventListener(AudioEvent.VOLUME_CHANGE, onVolumeChange); 
            dispatcher.addEventListener(PlayEvent.PLAY_STATE_CHANGE, onPlayStateChange);             

            addChild(mediaPlayerSprite);
            mediaPlayerSprite.media = videoElement;    
        }

        private function onVolumeChange(event:AudioEvent):void
        {
            trace("onVolumeChange");
        }

        private function onPlayStateChange(event:PlayEvent):void
        {
            trace("onPlayStateChange");
        }
    }
}