Controlling loops across scenes

     speaker.stop();
     song = new Sound();
     songPlay = "true";
     song.onSoundComplete = function() {
	song.start();
	speaker.play();
     };
     song.attachSound("your_loop");
     song.start();
     speaker.play();
     playButton.onRelease = function() {
	if(songPlay == "false"){
	  song.start();
	  speaker.play();
	  songPlay = "true";
	}
	song.onSoundComplete = function() {
		song.start();
	};
     };

     stopButton.onRelease = function () {
       song.stop();
       speaker.stop();
       songPlay = "false";
     }