Beets (for library management) + Navidrome (for serving) is a great combo if you want to go self-hosted.

Options for acquiring media:

- Buy vinyl/CDs

- Ripping from streaming services (Deezer was well-known for that a few years ago)

- yt-dlp for niche picks you can’t find in better quality elsewhere

- Rip CDs from local library

- Bandcamp, Soundcloud

- Various what.cd successors, if that’s your thing