If you are really ambitious and technically savvy, you can put something together yourself (http://www.mp3car.com). I was doing that before I got my empeg, and to tell you the truth, I ended up spending far more than the $600-$700 that you'll spend on ebay (although I did have a 8.4" VGA flat panel touchscreen and a singleboard computer to show for it.) The real gem with the Empeg is the software. It far outshines any music software I've ever used for flexibility, manageability, and stability.

Speaking of ebay, last night a 20 gig went for $705, so as they get rarer, the price is still rising...time is of the essence.