Yes this only happens during DLNA network play to my PWD.
Recently this 5 sec countdown behavior only happens after I've played a few albums, but in the past it has happened right from the git go.
What happens is the player will 'start' and the track info display will start counting. When it reaches ≈ 5 seconds into the track the counter will jump back to the start of the track and count down again. This cycle repeats. All the while no sound is heard. Probably because it takes 6 to 8 seconds for sound to start to be heard, but that is a guess on my part.
If I let this repetitive cycle continue long enough the app will not exit on its own. I have to force quit it.
But if I re-start the app most of the time it will continue this 5 sec. cycle, and the only way to 'recover' normal playing function is to shutdown and restart (a simple re-start doesn't work). In the past the 'solution' to be able to play music was to use the USB 'player' (non-network functionality) until the Mac was shutdown for the night.
This is why being able to perform a network server re-start would be helpful. Because essentially that is what is needed in order to recover from the 5 sec. cycle of doom…
JJ