Thanks for the reinforcement, Randolph. On the stick is a MUSICDAT folder that contains only an EDM.ZAL file. When I loaded it and inspected the Registers I noted a whole bunch of Ralph Maten stuff, which initially made me think it might have been used by Ralph Maten at a show or demo until i realized that stuff all came off the EDM.ZAL. Since after loading some the registers, strange (to me) things happened (like two instruments mapped to Upper 1 on the left hand side of the display), I restored to factory settings. I figured I could go back to the stick EDM.ZAL anytime, probably after I learned more about the MZ. The card that was attached to it is in German (which I mostly understand) so I could scan and post that if there's some interest. I see no mention of further distribution prohibition or copyright, so I guess I could upload the EDM.ZAL file as well. Maybe Brad could comment on the appropriateness of doing that. (Brad?)
I forgot to say that the card has a compatibility statement for Firmware Version 1.21 and the EDM.Zal is dated May 23, 2016 so it may very be already uploaded.