Yes, great find.
This thing would very pretty good with MultiJuke, as I could see it by myself:
HOME,*, DOWN, UP, LEFT, RIGHT,*, LETTER UP, LETTER DOWN, *, ACTION BUTTON A (RED),
ACTION BUTTON B (YELLOW), ACTION BUTTON C (GREEN), ACTION BUTTON D (BLUE),*,SHOW QUEUE.
For use without credits: move SHOW QUEUE to button 15 and add CONTROL PANEL to button 16.
I guess Wincab/doscab and SK-Jukebox (and maybe others?) could also use this panel very well...