Loading mp3's dynamically

SO I have a mp3 that I’m loading dynamically like so:

amnesiaLoop = new Sound(loopMC);
amnesiaLoop.loadSound(“http://www.amnesiasc.com/assets/club0.mp3”, true);
amnesiaLoop.start(0, 999);

The loop loads just fine but it stops after playing once even though I tell it to loop 999 times???

ANY help on this would be great.