Well I'm totally confused on what to get now.

I have the latest BM54 radio unit which supports MP3 text, etc. but don't know whether I should be getting this new BMW OEM MP3 changer or the Alpine one. Is there even any difference between them? I think I need an M-bus interface if I get the Alpine, so it may be better just to get the BMW OEM changer for a direct connection.

Having said all that, is there anyway of getting an BMW OEM changer from the net, or is it a trip to the dealers parts department?

My ruddy head hurts