Does anyone know of a product that will do this? A company called "Phat Noise" used to have a "Phat Box" product to accomplish this, but it has been discontinued and I have been unable to find another comparable unit. I don't want to have to hook an Ipod or mp3 player to hear music and would prefer a Hard Drive option that I can sync to my PC and download all my music once and for all. By the way I have a e39 (1999 540i). Thanks for any help you guys can provide.