kJams

What do you mean "list of singers", do you mean the "Rotation" playlist? do you mean the "KJ Rotation" playlist? Note, you are not meant to play songs directly in the "Venue" playlist (the one who's default name is "Singers")

in that case, just stop the rotation (command period, or escape, or press the stop button), then go to the song in the library and double click it

is this problem still happening? can you do a screen capture vid?

@edbronson are there other activities like pulling or pushing meta data? that would cause DB saves. and did you turn off "make backups" ?

dang.
well, i still can't reproduce the problem reliably.
if you can get a solid repro case, that will GREATLY help !!!!

try this:
go to kjams->prefs->advanced, and UN-check "automatically make backups of database"
see if that helps?

please report back!

still working on it...

no, it's not implemented. there is no quicktime. it will eventually be replaced by another exporter of some kind, probably h.264.
see this for what's not implemented

So a new 64bit update will come hopefully this week, where I enable the ability to turn off “backup database” in the Advanced pref panel. This will stop backing up your DB file, which may relieve the problem of kJams hanging for you. I’ll want you to get this update, turn OFF backups, then use it, a...

yes, i've seen this problem too. i can reproduce it well enough to try to debug it. Really sorry but i'm out of the office now for about a month, but it is my TOP priority when i get back! you can track the things i'm working on here . meanwhile: be ready to force quit and re-run, as a stop-gap meas...

Well your mac is obviously high powered, so it's very strange you're getting this problem.
Also: any bug in kJams is always the fault of kJams.

ok. and screenshot your computer's specs too

send me the video

@howard TunePrompter is a 32bit app and will ONLY run on Mojave.