Originally Posted By: lahawk
Yamaha has the easier and correct OS

Well, lol, that depends which Yamaha keyboard you are talking about. My old PSR-550 is great at playing GM midi files .... my classic Motif 6 simply cannot playback GM midifiles correctly at all. It doesn't make sense that a cheap PSR can but one of their pro workstations can't. I'm sure later Motif releases can .... just mine that can't