I have been using one called Sonixd, which is a dead project. The author decided to rewrite it and rename it to Feishin and the rewrite is much worse, but Sonixd does the trick. You can use any Subsonic compatible client and there are others out there.

The Navidrome website is really not bad. It’s much cleaner than Subsonic itself, and if your browser supports global media keys (Firefox does), you can still control playback from your keyboard (or macro pad or whatever).