Hi Jerry,
I know of a program by EMC. It works with a lot of different keyboards. That is you buy a version that meets your keyboard, and then can translate nearly all styles from known boards. A complete version, the works, is also available. Check out this link:
http://gem.generalmusic.com/en/accessories/works_professional.html In generel i am very satisfied with the instrument, BUT there are several points, where improvement should be done.
Among these are the import and export of midifiles. The Genesys seems to have a life of its own here. It converts all tracks to what it believes is the better sound. I have not yet figured out how to do this the "right" way.
Are you using the keyboard mainly for styles or midifiles or both?
I have purchased some files from MMS and find the quality very good. What files have you tried, since you come up with a different opinion?
By the way i got mine in December!
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Regards
Tommy