Kensington LiquidAUX. Charges and connects to audio through the dock, has a remote control for the steering wheel rim, volume is controlled by the head unit. Also have a Griffin iSqueez, a foam rubber holder to go into the cupholder console (from ebay, its been replaced now by a similar thing that comes with cables that I didn't want because I got the LiquidAUX. It has a wide side for iPhone/PDA/iPod or a narrow side for phones and iPod mini/nano sized things. I'm happy.