@Amon: Those .mp3 demos have basically nothing to do with the original ultra HiFi quality of the SID chip. They are totally corrupted by some reverb effects and other stuff. It's like the seat in the sphere in First Contact, why do people want to try to improve things when the original is perfect, they will only make it worse. The whole hardware SID feeling is gone from those demos. It's just boring music now. No PC can ever emulate an C64 or Amiga in their original quality, they had so far advanced hardware, that a PC will probabaly never have them.