You'll have a slight problem putting a changer on the Aiwa - only the CD mech in the head unit supports MP3-CDs. If you attach a changer, it will only do standard audio CDs.

I'm sure they'll come out with a MP3-CD changer soon, but I've no idea whether the interface will be compatible with the CDC-MP3.

Hvae fun with the (up to) 2 minute wait when you put in a disc while it's scanned by the Aiwa, and the up to 5 second pauses between tracks ;)

Hugo