My idea is to play them like virtuaNES does with the exact style with the keyboard and everything. And about the expansions well don't display them but instead display track/track and the controls are simple A=advance track, B=previous track<=disable triangle, >=disable PCM, UP=disable wave 1, Down=disable wave 2, Start=Start/pause, Select=disable noise, and reset brings you to the NSF menu while power brings you to the main menu. There are no volume nor speed controllers as of yet.