Starting next sound when sound is done

Hi Everyone,
I have 3 tracks as background music for my site. I’m using this script to play them and to fastforward.

mp3path = "http://2-cubed.net/v2/audio/";
 music = ["track1.mp3", "track2.mp3", "track3.mp3"];
 t = 0;
 function loadTrack(t) {
 	song = new Sound(this);
 	song.loadSound(mp3path+music[t], 999);
 }
 nextBut.onRelease = function() {
 	t<music.length-1 ? t++ : t=0;
 	loadTrack(t);
 };
 loadTrack(t);

Now i’m wondering what would i have to do to automatically go to the next track when track 1 is done.

I was trying this code but i’m not sure if it works.

song.onSoundComplete = function(){//
 // soundobject.start(secondsoffset,loops);
 	t<music.length-1 ? t++ : t=0;
 	loadTrack(t);
 }