I know you can hook up an iPod to the AVIC, but is there any way to get it to read music files from a USB jumpdrive?

Alternatively, are there any compatible CD-changers that handle MP3s? The CDX-P680 and CDX-P1280 don't seem to work with MP3s and I can't find any others.

I want to be able to play music while leaving the nav disc in the head unit so I have navigation available all the time; any other ideas to accomplish this are welcome also...

Any ipod or mp3 player with RCA outputs can be run into the hideaway brain on the N1. Pioneer doesn't make an mp3 cd changer and the USB adaptor was designed for the N4, so it works like crap on the older ones