Music wouldn't be the reason. If it has already been released outside of VC (Which is has), then there should be no reason not to put it on VC. It, along with its music, is already out for the public to use. Somebody could easily just pick up a copy of the SNES version and listen to that so-called-similar music. Then they WOULD sue. However, no law suits have been made at all on the music of Earthbound. This rumour is false.