mp3 music list

function init() {  
var myRoot = this;  
  
var queue;  
  
var currentSongIndex = 0;  
var previousSongIndex = currentSongIndex;  
var sources =   
[  
"fransk2.mp3",  
"fransk3.mp3",  
"orup.mp3"  
];  
  
  
queue = new createjs.LoadQueue();  
queue.installPlugin(createjs.Sound);  
queue.addEventListener("complete", handleComplete);  
  
queue.loadManifest  
(  
[  
{  
src: sources[0],  
id: "sound1"  
},  
{  
src: sources[1],  
id: "sound2"  
},  
{  
src: sources[2],  
id: "sound3"  
}  
]  
);  
}  
function handleComplete(event)  
{  
  
myRoot.playlist = [];  
myRoot.playlist[0] = createjs.Sound.createInstance("sound1");  
myRoot.playlist[1] = createjs.Sound.createInstance("sound2");  
myRoot.playlist[2] = createjs.Sound.createInstance("sound3");  
playSong(currentSongIndex);  
}  
function playSong(index)  
{  
myRoot.playlist[index].play();  
}

This code above and I want it to play but nothing happens. Now it's just quiet. How I start to play this?