Yeah I don't think this violates the law. It's like emulating old Amiga games. The amiga library from the way back machine Internet archive tosec is definitely legit and because comercially sounds for this instrument are not being sold, or maybe a few people are offering sounds, it's pretty legal. Check out the mame projoects. No one can get access to the games so it's pretty much legal. The copyright rules of 75 years force neglect of many trends that existed. It's like looking for free math ciricuulum. There isn't much on the free internet. Mit open course ware, ocw is one site, but as long as you get Amiga forever any fiiles you come across for that are legal. Dr T's KCS was excellent and the only program that comes close to it is Band in a box.