I built a small SWF that loads a YouTube video. But, when I attempt to unload it, the audio continues to play.

On FRAME 1, I've got 2 MC objects: videoPlayer and buttonNext.

FRAME 1 CODE:
Code:
var videoPlayerLoader:MovieClipLoader = new MovieClipLoader();
videoPlayerLoader.loadClip("http://www.youtube.com/v/DmDjBONCXEo", videoPlayer);

buttonNext.onRelease = function () {
	videoPlayerLoader.unloadClip(videoPlayer);
	_root.gotoAndStop(2);
}
stop();
FRAME 2 CODE:
Code:
stop();
The YouTube video plays properly. But, when buttonNext is clicked, and the playhead advances to FRAME 2, the audio for the video continues playing. Does anyone know how to unload the YouTube video? Thank you in advance.