Navidrome serves what you give it. The audit happens on the file system, not inside the server.
Navidrome (and the broader Subsonic ecosystem — Airsonic, Gonic, etc.) is excellent at being a focused, self-hosted music server. It does one thing well: serve your music collection with a clean API and good clients. What it explicitly doesn't do is audit the files it's serving — duplicates across formats, fake-FLACs in audiophile sections, files moved/renamed/orphaned — those problems live on the file system layer, not inside Navidrome's database.
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Self-hosted music servers are great at staying focused — Navidrome's authors specifically push back against feature creep that would turn it into a Plex-style monolith. That means audit tooling needs to live outside the server, which is actually the right architecture: file system as the substrate, server as one consumer of that substrate, audit tools as another consumer. Music Library Doctor operates entirely on the file system and never talks to Navidrome — clean separation, no plugin lifecycle to maintain, no auth integration to break when Navidrome updates.
Yes. All Subsonic-family servers read music from a file system. MLD audits the file system; the server picks up the changes on its next scan.
MLD runs on Mac or Windows, not on the server itself. Mount the server's music folder to your Mac/PC, audit there, write back. The Pi doesn't need to do any audit work.
Watch Folder mode is on the MLD roadmap. Today the workflow is run-on-demand: when you add new music, trigger an MLD scan before triggering a Navidrome rescan.
MLD operates on files. Navidrome's playlists are stored in its database with file path references — if you move or delete files, playlist references break. Best practice: keep cleanup operations to duplicates and fake-FLACs (which Navidrome probably doesn't have in playlists yet), and avoid moving files Navidrome's playlists already reference.
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