New plugin: mirror your ListenBrainz "Weekly Exploration/Jams" into Navidrome

[madmax1301]

Short version: there's now a Navidrome plugin that takes your ListenBrainz Created-For-You playlists — Weekly Exploration, Weekly Jams, and the two "Last Week's" ones — and mirrors all four into Navidrome as personal, per-user playlists. The tracks you don't own yet get queued for download through Tonus and reconciled into the playlist as they land.

If you already use ListenBrainz, this is the "why isn't my server just doing this automatically" itch, scratched.

What it actually does

• Reads your four LB Created-For-You playlists (public LB profile required).
• Creates/updates four Navidrome playlists owned by your Navidrome user — same names as on ListenBrainz.
• Tracks already in your library are added immediately. Missing ones are queued in Tonus (YouTube/SoundCloud/Deezer source) and trickle into the playlist as downloads finish.
• Each weekly run replaces the playlist in place, exactly like ListenBrainz refreshes its own. Playlist ID stays stable, so anything you copy out into your own playlists is untouched.

Multi-user: map several Navidrome users to their own LB accounts, each gets their own four playlists.

How it's built (for the curious)

The plugin is deliberately thin — it's an Extism/WASM plugin that only registers a cron and talks to two Tonus endpoints. All the discovery + downloading lives in the Tonus backend where it's easy to debug. The plugin just triggers the run and writes the resulting track list into a Subsonic playlist as the user (via Navidrome's users permission — no passwords stored anywhere).

One trap worth flagging for anyone building against the LB API: GET /user/<u>/playlists/createdfor returns playlist metadata only — the track array is empty. You have to follow the identifier to GET /playlist/<mbid> to get the actual tracks. Cost me a debug session.

Requirements

• Navidrome ≥ 0.60 (plugin system)
• A running Tonus instance (≥ v0.6.1) — Tonus is the acquisition backend that does the downloading
• A public ListenBrainz username

Get it

• Plugin + install instructions: https://github.com/madmax1301/tonus-navidrome-plugin (grab the .ndp from Releases)
• Tonus backend: https://github.com/madmax1301/tonus

Both are alpha and MIT-licensed. This is running in my own household daily — four playlists, ~130 tracks across them on the first build — but I'd genuinely like to know how it behaves against LB accounts with very different listening histories than mine. If you try it, tell me what broke.