Playing sounds randomly

[HumanBean]

Hi everyone

I have this personal site I'm working on, and I'm having some trouble with a sound issue...

I've some loop tracks that play in the background, with this code:

MySound = new Sound(this);
MySound.attachSound("sound1");
MySound.start(0, 999);
MySound = new Sound(this);
MySound.attachSound("sound2");
MySound.start(0, 999);
MySound = new Sound(this);
MySound.attachSound("sound3");
MySound.start(0, 999);


Now, besides those three loops, I want some small sounds to play random... I think this site has something like that

http://www.milesaldridge.com

So what I need to learn is how to tell this other sound files (let's say, "sound4", "sound5" and "sound6") to play randomly once in a while.
I hope you can help me

Thanks in advance,
Guido