My current setup, is as follows:

Personally curated music I buy and organize using Picard into folder A.

Lidarr is configured with folder C, which is a mergerfs volume consisting of folder A and B. Folder A is read-only, and any writes on C go into folder B. This way Lidarr can “see” all my existing music, while any automated downloads go into folder B.

Lidarr actually works, because it is hooked up to Soulseek using Tubifarry with ytdl as a fallback. I also have an import list hooked up to my last.fm recommendations to automatically download new stuff I might like.

When I feel like it, I go through folder B using Picard, moving things I want to keep into folder A.

To access my music, I use Jellyfin, also through folder C. My clients are Feishin and Symfonium.

In Symfonium, I use smart playlists for discovery. These playlists populate based on stuff like “unlistened tracks” or “multiple plays without being favorited” and “recently added from favorited artists”.

My favorite feature however is the tag-based endless playback which allows me to pick a track to start with, and them swipe through music with at least some kind of logic to the progression. This is my main way to browse my library.

For iOS support, look at Navidrome for the server and maybe SubStremer for the client.