Interference hey? Or huanted speakers?

I remember once my dad plugged the sound input from a tv tuner card into the sound card's aux. input. You could hear static if the digital tuner wasn't on or whatevers on that channel when its on in the background.

Any chance you have a similar setup?

If not, I hear if you auction huanted items on ebay, you get lots of $$. Just make sure people sign contracts not to sue you if anything happens...