Hmm... they pick up the interference whether they are plugged in or not regardless of what they're plugged into, as well. They're wired, pretty old speakers (originally on a Pentium 1 machine). I recently moved to another side of the building I live in and still pick up the interference. I guess they aren't properly shielded from this interference. I've been told there's an antenna just up the hill. My roomate's speakers don't pick them up, so I guess it's just the design of my speakers that pick up this station.

Thanks all.