Navidrome maybe? But I use jellyfin + symfonium myself. All my music is either bandcamp or used CDs. Started collecting music late last year and my entire collection is legally sourced now. No piracy required. Hardest part was starting very small and building the collection over time.

We use Ubuntu at my work. Custom built image PXE booted so every restart is fresh. Has its pros and cons. Libre office does a decent job at replacing Office but we use Google workspace so most users are moving off local files. 90% of our users work could be done entirely through a Web browser so OS doesn’t really matter as much any more.