weirdest possible virus/spyware/trojan ive seen

so basically my computer starts playing music out of nowhere, at one time it was even playing some tv news channel, and there was also a listerine commercial, i only hear the sound though, i cant seem to find where the sounds coming from, im pretty sure its not signal interference because when my speakers DO get that interference its usually very fuzzy, the sounds that im getting now periodically are almost crystal clear, has anybody ever heard of this problem?

Hi,
Sorry to hear of the problem.
It would be sensible to go here http://forums.tomcoyote.org/index.php?showforum=27 and post a hijackThis log so that the experts there can take a look and see if there are any suspicious or malicious elements at work.
Regards
paws