Don't suppose anyone knows why my Mac Mini (Intel Core Duo) emits intermittent static and various other irritating noises? It does it mostly when playing music through iTunes or using emulators such as UAE. Strangely I don't notice any glitches when watching TV via EyeTV. It's not the speakers because I've tried plugging in headphones and the distortion is still audible. I've also muted the line-in and that didn't help either.