New JJazzLab 4.0.2 flatpak for Linux

I tested the 4.0.2 flatpack on Fedora 39 last night.   As I was just getting started with it,  I wanted to load a bunch of yamaha style files as rhythms.    The UI didn't work  for me,  kind of looked like it wasn't all finished.  When I went to the screen to add the rhythm files,  it told me that a scan for rhythm files was scheduled for the next re-start, and it asked me if I wanted to re-start immediately.  I said yes,  and it restarted,  but if a scan was scheduled, I do not think it happened.   The file selection dialog herded me  down to the ~/JJazzLab folder (under my  home folder),  but it did not populate the list of files from which to choose with any of the 250+ rhythm files I had put into that directory.  The list of files to select from was empty.   ( If you were intending to  scan the whole computer to find just the relevant folders and files to show up in that dialog,  I would advise against.  My computer has all kinds of devices mounted, some  of them large and quite a few connected by slow USB. )    I went through this drill multiple times, with and without restarting, and I never got to load any rhythm files.

The program looks pretty nice, but my application for it may not work out.  There seem to be too many moving parts,  with various limits on number of voices,  buffer issues,  etc.    Getting accompaniment generated would be nice,  but that's a lot to bet on for a simple use case, simple music,  no fancy orchestration needed.

Anyway,  since you asked for feedback, I appreciate your efforts.

Crash C