I guess there a few small companies that have Hard Disk Drive stereo systems but now both Sony and Panasonic have them. You could basically look at them as iPods in home stereo format. They both have 6gig drives and CD players so you pop in a CD and copy to the drive. At 6gig they would only hold 100 CDs at 105k bits per second which is less than ideal. They also both have memorystick slots so you can make your favorite mix for your portable MP3 player.