Just ripped out the Alpine KCA 420i that Mike at Rentech fitted for me a few months ago - although it worked for music it was not possible to have the sound from films coming through the car system. So bought an Alpine MP3 connection wire which plugs into the CD changer input and then into the top of the ipod (headphone jack) and it works! I now have full surround sound on my ipod films - well chuffed and my son is even more chuffed!
Will post some pics tomorrow
Will post some pics tomorrow