5.1 Albums in Music Library stopped playing surround on AppleTV

I have many 5.1 albums in FLAC format stored in a plex music library. At some point, they stopped playing surround and will only play 2-channel from my AppleTV. I can’t find any settings to check or change this via web settings or AppleTV for the music library.

Server Version#: 1.18.3.2156-349e9837e
Player Version#:

Me too. I’ve pretty much given up hope that this will ever be resolved but I’d love to be proven wrong!

Has this been reported somewhere else as a bug? I’d be happy to add my voice there and close this thread. With Plex having audio enthusiasts in their customer base, I can’t imagine this wouldn’t be addressed. It’s one of my primary use cases.

Yes. Last acknowledged by Plex in this longer/older thread:

Closing this thread as a duplicate.