Make the MP3 player play through

when the first song finishes the player stops, how can i make it play the next song and the next song etc… automatically.

stop();
playlist = new XML();
playlist.ignoreWhite = true;
playlist.onLoad = function(success) {
	if (success) {
		_global.songname = [];
		_global.songband = [];
		_global.songfile = [];
		for (var i = 0; i<playlist.firstChild.childNodes.length; i++) {
			_global.songname* = playlist.firstChild.childNodes*.attributes.name;
			_global.songfile* = playlist.firstChild.childNodes*.attributes.file;
		}
	}
	_root.createEmptyMovieClip("sound_mc", 1);
	_root.sound_mc.sound_obj = new Sound();
	_global.song_nr = 0;
	_root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
MovieClip.prototype.songStarter = function(file, name) {
	this.sound_obj.loadSound(file, true);
	this.onEnterFrame = function() {
		if (this.sound_obj.position>0) {
			delete this.onEnterFrame;
			this._root.mp3.display_txt.text = name;
		} else {
			this._root.mp3.display_txt.text = "loading...";
		}
	};
	this.sound_obj.onSoundComplete = function() {
		(song_nr == songfiles.length-1) ? _global.song_nr=0 : _global.song_nr++;
		_root.sound_mc.songStarter(songfiles[song_nr], songname[song_nr]);
	};
};
volume1.dragger.onPress = function() {
	startDrag(this, true, 0, this._y, this._parent.volBG._width, this._y);
	this.onEnterFrame = function() {
		var p = (this._x/this._parent.volBG._width)*100;
		_root.sound_mc.sound_obj.setVolume(p);
	};
	volume1.dragger.onRelease = function() {
		delete this.onEnterFrame;
		stopDrag();
	};
	volume1.dragger.onReleaseOutside = function() {
		stopDrag();
	};
};
play_but.onRelease = function() {
	_root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
stop_but.onRelease = function() {
	_root.sound_mc.sound_obj.stop();
};
fwd_but.onRelease = function() {
	(song_nr == songfile.length-1) ? _global.song_nr=0 : _global.song_nr++;
	_root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
back_but.onRelease = function() {
	(song_nr == 0) ? _global.song_nr=songfile.length-1 : _global.song_nr--;
	_root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
playlist.load("playlist.xml");

yours sincerley
Mat