No sound in Windows

programming flash
1

Hello, I made an animation in Flsh CS4 using MAC OSX Leopard, so far so good, but when that same road show in Windows does not come out the sound.
I accessed some flash sites with sound and sound is normal, only the presentation mimha not.

Simple example of code that used to run the sound:

 
... 
import flash.media.Sound; 
import flash.net.URLRequest; 
import flash.media.SoundChannel; 

var requestSound: URLRequest = new URLRequest ( "WhenYoureGone.mp3"); 
var soundFactory: Sound = new Sound (); 
var someTransform: SoundTransform SoundTransform = new (); 

soundFactory.load (requestSound); 
var channelSound: SoundChannel soundFactory.play = (0.5, someTransform); 
...

Thanks for any help