2023-11-20, 11:13 PM
Basically you want to send one music stream to multiple client devices? Not directly through Jellyfin, no. However there's another project that you should be able to plug into relatively painlessly. I don't have any first hand experience with it, but I know somebody else was trying to do something similar a few years ago and afaik they got it to work.
https://github.com/badaix/snapcast
https://github.com/badaix/snapcast