Sound Object FMX AS 2.0

programming flash
1

Hi, can someone tell me if there is something wrong with this? playbtn_mc is a button with that instance name… The button is on the main timeline not in another mc, I tried _root.my_sound.start(); also. The mp3 name is correct and is in the same folder as the fla and swf

playbtn_mc.onRelease = function(){
var my_sound:Sound = new Sound();
my_sound.loadSound(“backtoschool.mp3”, true);
my_sound.start();
}

I’ve been to the kennybellew as2 tut but cant seem to get it working with onload?

Thanks