I was wondering what the best way to hook up an iPod to a 2005 STS with navigation would be. It has RCA inputs in the center console, but do they cut out sound as well as video when you shift the car into drive? I've read in many places that it cuts video, but no one has mentioned audio. Or would it be possible to somehow place a 3.5mm stereo input next to the RCA inputs and have the connection take over my unused XM band? Any help is much appreciated.