Swf loads in IE but not FIREFOX

[muntech]

I have a simple mp3 player that loads into IE and not Firefox :S

www.mun-design.com/zenydesigns/English

To load it onto my MAIN movie im using this code

stop();

var mp3:Loader = new Loader()
mp3.load(new URLRequest("ipod.swf"))
addChild(mp3)
mp3.x=700;
mp3.y=700; 

And on the swf itself I have this:

var getMusic:URLRequest;
var music:Sound = new Sound();
var soundChannel:SoundChannel;
var currentSound:Sound = music;
var pos:Number;
var currentIndex:Number = 0;
var songPlaying:Boolean = false;
var xml:XML;
var songlist:XMLList;

function loadProgress(event:ProgressEvent):void {
    var percentLoaded:Number = event.bytesLoaded/event.bytesTotal;
    percentLoaded = Math.round(percentLoaded * 100);
    if(percentLoaded > 20){
        trace("loading");
    } else{
    }
}

function completeHandler(event):void {
    trace("DONE");
    }

/*-------------------Load in Our XML ------------------------*/
/*----------------------------------------------------------*/
var loader:URLLoader = new URLLoader(); //create a new URLLoader Object 
loader.addEventListener(Event.COMPLETE, whenLoaded); //add an event listener to that object 
loader.load(new URLRequest("songs.xml")); //Requests our xml file that contains our song data

function whenLoaded(e:Event):void //WhenLoaded function(see line 50) runs when line 50 is complete
{
    xml = new XML(e.target.data); 
    songlist = xml.song; //accesses our song tag in our xml file
    getMusic = new URLRequest(songlist[0].url);//get music from songlist
    music.load(getMusic);//load music
    soundChannel = music.play();//plays the music
    songTXT.text = songlist[0].title; //gets song name from xml
    artistTXT.text = songlist[0].artist; //gets artist name
    albumTXT.text = songlist[0].album;  //gets album name 
    
    soundChannel.addEventListener(Event.SOUND_COMPLETE, nextSong);//runs the next song function when a song completes
}



/*--------ads some mouse events to our buttons----------------------------------------*/

next_btn.addEventListener(MouseEvent.CLICK, nextSong); 
prev_btn.addEventListener(MouseEvent.CLICK, prevSong);
pause_btn.addEventListener(MouseEvent.CLICK,pauseSong);

/*--------Skips Songs----------------------------------------*/
/*-most of below the vars is explained above---------*/

function nextSong(e:Event):void
{
    if (currentIndex < (songlist.length() - 1))
    {
        currentIndex++;
    }
    else
    {
        currentIndex = 0;
    }

    var nextReq:URLRequest = new URLRequest(songlist[currentIndex].url);
    var nextTitle:Sound = new Sound(nextReq);
    soundChannel.stop();
    songTXT.text = songlist[currentIndex].title;
    artistTXT.text = songlist[currentIndex].artist;
    albumTXT.text = songlist[currentIndex].album;
    soundChannel = nextTitle.play();
    songPlaying = true;
    currentSound = nextTitle;
    soundChannel.addEventListener(Event.SOUND_COMPLETE, nextSong);
}

/*--------Previous song and acceses the information in the xml File--------------------------*/
/*--------most of below the vars is explained above-------------------------*/

function prevSong(e:Event):void
{
    if (currentIndex > 0)
    {
        currentIndex--;
    }
    else
    {
        currentIndex = songlist.length() - 1;
    }

        
    var nextReq:URLRequest = new URLRequest(songlist[currentIndex].url);
    var prevTitle:Sound = new Sound(nextReq);
    soundChannel.stop();
    songTXT.text = songlist[currentIndex].title;
    artistTXT.text = songlist[currentIndex].artist;
    albumTXT.text = songlist[currentIndex].album;
    soundChannel = prevTitle.play();
    songPlaying = true;
    currentSound = prevTitle;
    soundChannel.addEventListener(Event.SOUND_COMPLETE, nextSong);
}

function pauseSong(e:Event):void
{
    pos = soundChannel.position; //pause song at current position
    soundChannel.stop(); //stop sound
    songPlaying = false; // songPlaying is now equal to false
    play_btn.addEventListener(MouseEvent.CLICK,playSong); 
}

function playSong(e:Event):void
{
    if(songPlaying == false) //if songplaying is equal to false run function below
    {
        soundChannel = currentSound.play(pos); //play from current position(used if it was paused)
        soundChannel.addEventListener(Event.SOUND_COMPLETE, nextSong);//run nextSong function if current song is complete
        songPlaying = true; //songPlaying is now true
        play_btn.removeEventListener(MouseEvent.CLICK,playSong);
    }
} 

I am at a complete blank as to what I can do to fix this I dont even know where to begin haha.. any help would be appreciated! Thanks!