Anyone know of a way to get the audio output from either a portable dvd or laptop into the audio for the Odyssey? We have an EX, so a cassette adapter is out. What would be best is if I could run a wire that plugs into the back of the stereo (or the in dash cd changer I added) that could then plug into the output of the other device. I could just leave the wire accessible under the dash. Anyone ever seen anything like this?