Just thought I would comment on a great piece of kit that came in my caddy, from 08 onwards.
The radio comes equipped to play mp3s(it has mp3 wrote above the cd slot).
If you have itunes you can burn 8 or 9 cds onto one mp3disc
You can set it up to play like having a 9 disc changer in your dash!
I make a new one every month
