Random Music

Hey, I just started doing my new website, and i want to make the flash file load a different external song from a url each time so someone refreshes or joins the site.
Could someone please tell me how to play with this code to make it work.

[AS]onClipEvent (load) {
mySound = new Sound();
mySound.loadSound(“http://www.geocities.com/funky_chickin4eva/funkybass.mp3”, false);

can i make it load a different url, by giving it a list of what it can open.