Problem with loading sound.HELP!!!

[lizok]

In my movie I'm loading sound with code:

Code: Select all

var mysound:Sound = new Sound();
mysound.onLoad = function(success:Boolean):Void {
    if (success) {
        trace("Sound Loaded");
        mysound.start();
    }
};
mysound.loadSound("../SONIDO/musica_WEB.mp3",true);

Its loading BUT playing very fast, lake 5 times more fast than song is.
Sound is big and I cant put this inside of movie.
Where is a problem, did anybody have this problem?
Thanks alot and excuse my english.