random music....
 

So, I noticed the other day, my computer seems to randomly play music, sounds like wav stuff.

The other day it was like some xmas thing, and today it was I think the theme from Beverly Hills Cop.

I've done virus scans and nothing.

I haven't been able to find something that duplicates it, and since I don't have speakers, just headphones I don't always notice it...

any ideads/suggestions?