I have an MP3 CD head unit and a 6 CD changer in the boot, the changer seems unnecessary as it has half the capacity of a single MP3 disc. Is it possible to get an MP3 changer to directly replace the CD changer or am I misunderstanding the use of the 6 CD changer?

VW do a 6 mp3 cd changer but it mounts in the dash rather than the boot

wouldn't you be better off replacing cd changer with iPod adapter in that case? Makes sense to me!

If you want MP3 only, see if you can find a phatbox. Replaces the CD changer with a 20gb disk that you load from the PC.

IIRC Fluffmeister's selling one for £100.