I just got a Microsoft Zune and when I charge it, I get the humming and hissing. I bought at Radio Shack the ground loop isolator and couplers so I can use the RCA jacks for audio and video. The problem is, the isolator only had for audio, so I am still getting hissing, albeit less. I am assuming it's because the video is not going through the ground loop. I've been searching the net, anyone find a ground loop isolator for audio and video? Does anyone else have this issue?

 

Hmmm..this one looks like it might do the trick:

http://www.crutchfield.com/S-BWHyX59...sp?i=127SNI135

It just works on the mp3 player end.....

 

Just an update, this does not output video and I need to return to Crutchfield now. It appears a Ground Loop adapter that also has video outputs is not available anywhere.