GitHub - dweymouth/supersonic: A lightweight and full-featured cross-platform desktop client for self-hosted music servers
github.com
A lightweight and full-featured cross-platform desktop client for self-hosted music servers - dweymouth/supersonic

So I have been using it for a while for navidrome, can’t say how good it is for Jellyfin, but it supports both and is pretty awesome if any of you have navidrome or Jellyfin and have a desktop this is a pretty awesome piece of software