I just assumed the author had a favourite, I didn’t even think to edit it.

Navidrome supports Smart Playlists: github.com/navidrome/navidrome/issues/1417#issuec… it’s not feature complete, but it’s live.

Symfonium also supports folder view, Most Played Song, Most Played Album, allows for Downloading music, as well as caching for offline usage, favourite tracks can be bookmarks, it has Internet radio support, supports lyrics and crossfading.