Thanks for all your helpful replies. I have found an adaptor that fits the specs in a local store (I didnt want to wait any longer to try it out...).
The plug has the same size as the original and it seems to work flawlessly.

Right now I'm encoding all my cds, so as soon as I find a car that suits my empeg I can then transfer them all to the unit.

I'm really glad to be a member of this board and to have bought the player.

Marc