I haven’t looked in a few years, does jellyfin have seeded shuffling where you pick a song and it builds a playlist around it?

No, it’s entirely for people with personal collections. Or I guess if you use Tidal idk.

I’ve been doing birds. So far I just have Cardinal, Bluebird, and Sparrow

If you already have a Nextcloud, theirs is solid

I’m enjoying worrying people with my vanity domain. My instance is essentially single user (me and a couple selected friends)

The antenna and music support is better on Plex imo, but I think both require to pay for premium