I have a 1998 bmw 528i with a 6 cd changer in the trunk and a tape player that is hidden under a wood grain flip thing. I have heard that I can switch out the tape insert to a cd insert. The dealer wants to charge me $550....I dont think so. I have also heard that you can just buy a head unit and insert it that way and hide it with the trim. A friend of mine that works in the bmw service department told me the reason the bmw cd insert is so expensive is because it is specially wired for the stereo in the car to connect right in. He said if you buy a regular head unit, other than the bmw insert, it will not work properly as a whole system. He said it would require a splitter, but one wouldnt work without the other, they would play at the same time, and such problems. Does anyone who has had this problem or has dealt with it have any answers!??! help! All I want is to insert cds while Im driving if I feel like it and use the controls I already have. Sorry for the novel.