I don't have the Technics keyboard in front of me, but maybe you could save the midi file as a Technics file, make the changes, and then save the song back to a midi.

Saving a Technics file to a midi requires some work (IMO, a major fault with Technics keyboards) For futher assistance, visit http://www.keso.nl/

Good luck, and keep us informed with any progress.

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Larry
SynthZone Frapper