HI Graham,
I also use some of Michael's terrific and highly useful PSR utility programs including 'Chord Assist' in which he further enhanced (lastest update version) to respond to my wishes to retain Yamaha specific arranger chord data. Unfortunately most all commercial midi sequencer programs (Cakewalk, Cubase, Logic etc), except for Yamaha's XG Works, will ignore and then delete this Yamaha specific Meta Event data when loaded & resaved.
Is MMDBEDIT the same thing as Michael's MusicFinder View? Though MusicFinder View allows you to sort and print out the Music Finder database, it doesn't allow you to enter or edit existing data. If the program you are talking about is different, perhaps you can provide a link. I also didn't realize Michael has a Registration Memory Bank editor available for the PSR9000/9000pro and PSR2000 now. Perhaps you can provide a link to this as well.
Currently, for Registration Memory Bank editing, I've been very HAPPY with PSR REg:
http://heikoplate.de/indexhtml.htm then: click on Downloads, and then on PSRReg.
Scott

[This message has been edited by Scottyee (edited 05-31-2002).]