found this while searching around for stuff...not sure if it works but if it does i would think this would be a great answer to a lot of external audio source needs...
wow that looks pretty cool. so you connect that to the ext in the back of the HU and then you can hook up any USB MP3 player to it?
Seem very inexpensive
Any USB Thumbdrive to it looks like..thats really a pretty cool little device...Dont know about the $130 for such a tiny thing, but it might be worth it.
for 10 more $$ he has one directly made for the ipod as well... doesn't seem to bad of a price and according to the site you can change tracks withyour stereo control...