13 years later...
So, I managed to buy a nice looking PCV-MXS10 (seems the same as MXS20 but with lower PC specs). I know I'm not the only one here to own this beautyful piece of hardware. Does anybody have recovery discs or driver/software installers for MXS10/20? Sony US and JP removed any files from their web sites.
p.s. MD drive is not working, as expected. But I bought a laser module replacement and it didn't help. Maybe I'm missing a driver or proper software? It loads the disc and I hear laser cart's motor. But I don't hear spinning motor at all. After 10 secs it ejects the disc. SonicStage Premium 1.0 says "disc not inserted" all the way, but indicators on built-in lcd display shows some MD activity.