Subfin OpenSubsonic → Jellyfin bridge
Ready to link Subsonic clients
Link Jellyfin to Subsonic clients

Sign in with Jellyfin, then use app passwords in your Subsonic/OpenSubsonic clients. Tested and mostly functional with Castafiore, Dsub2000, musly, Navic, Tempus, and Youamp! Bugs guaranteed.

New client
Link device
Use Jellyfin Quick Connect on a device where you are already logged in. You'll get one app password for this device — each link is a unique token from Jellyfin.
In Jellyfin: Settings → Quick Connect
Existing clients
Manage devices
Sign in with Quick Connect to view linked devices, rename them, reset app passwords, or unlink.
You'll be asked to approve the login in Jellyfin.