If I were you I would get rid of those MP3-cd's and connect a Phatnoise PhatBox with a DMS Cartridge of at least 40 GB onto your original VW radio or satnav unit and enjoy a serious lot of hours of MP3's without having to change the cd.
do you have one GTO2007? What kind of integration hardware/adapters are involved. I'd be interested in something like that, if i knew it was painless to install... i am really getting tired of the fm transmitter for my ipod
No I'm sorry, I don't have one yet but I'm also very interested to put in my future GTI. Maybe have a look at this PDF-file from the installation guide for the MK4 GTI but I think that the installation for the MK5 GTI is pretty similar.