Here's an issue I haven't seen on this board: I have a dice unit connected through the boot in my 07 cabrio with the HK system. I have my xm radio plugged into the dice unit aux jack and my gps, which has an mp3 player plugged into the glovebox aux jack. Recently I started hearing a speaker whine when playing the ipod; both the xm radio and the gps are perfectly quiet. Anyone have any ideas why it only happens with the ipod? Thanks.