This discussion comes up every so often at the Arranger Forum. The usual answer is "can't be done." The major reason lies in the keyboard's operating system and the fact that you cannot add driver software to the OS. If someone could invent something that you could insert into a floppy drive that would read a smart card or USB, that would be great, but "it ain't gonna happen."
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Cass Pawlowski - Detroit
www.cassponline.com/