I have a Pioneer DEH P4600MP. No clue what I need to buy to hook up an ipod to this. Im sick of using the radio wave thingy and tuning into a station. I would like to get a direct hookup if possible. I was assuming since this radio was xm ready it might be possible.. or easyer to hook the ipod up. Headunit http://www.pioneerelectronics.com/pna/product/detail/0,,2076_4039_50410536,00.html Picture of the back if needed. any info?