Well, from an artificial intelligence standpoint, it needn't take very much space at all. If empeg implemented this as a force feedback neural network for selecting transitions between songs on a list, where the feedback mechanism is the user ranking on a scale of 0 to 9 on the remote control -- and the variables are different database description items... then perhaps over time the empeg will learn the characteristics of song transitions for a particular user. That would be quite interesting really... And there are off the shelf freeware neural net libraries for doing this... probably..

Calvin