I got something that fits in the glove box and plays the occasional CD a cd walkman. Take the glove box out and drill a hole in it and run a cable from the aux in port on the empeg. pop the glovebox back and stick a cheap and chearful cd walkman in there and you have cd playing capacity.

I have done this when i installed the empeg but never used it so ensure it is a cheap walkman as the batries will eventually leak and kill the walkman like mine did.