Rekordbox (encrypted DB supported), Serato, VirtualDJ (incl. Favorite Folders) — all read natively. Health score, duplicate finder, missing-file fix, folder consolidation, built-in player, bulk actions. Zero uploads.
Most DJs end up with a stack of tiny utilities: one to dedupe, one to migrate, one to fix missing tracks, each with its own UI and its own scope. Almost all of them require XML export/import chains that lose data. Rekordbox's move to an encrypted master.db in version 6 broke a lot of older tools entirely. And none of them understand that when you move a file, every playlist across every DJ app needs to be updated coordinately.
Supported today
Rekordbox · Serato DJ · VirtualDJ (incl. Favorite Folders) on Windows 10+ and macOS (Apple Silicon + Intel).
MLD reads master.db (Rekordbox, encrypted DB keys supported), `.crate` files with `%%` hierarchy (Serato), and database.xml / M3U / Favorite Folders (VirtualDJ) directly — then writes back to each app's native format. No XML middleman, no lossy conversion, no rebuilt hierarchy, no cloud round-trip. The same tool handles migrations, missing-file repair, duplicate cleanup, and folder consolidation, which means every file move is coordinated across every DJ app at once.
Native integration across all three DJ platforms in a single tool, Windows + macOS parity, support for Rekordbox 6+ encrypted master.db, a unified Library Health Score across apps, and pricing — $49 lifetime vs. $150+ for the alternatives ($19 for the first 100 users).
There's a permanent free tier — full Library Health Score, view your libraries, detect missing tracks and duplicates. Pro adds bulk fix actions, playlist transfer, and the Folder Consolidation Wizard.
First 100 customers get $19 lifetime access. A live counter on the homepage shows how many spots are left.
Rekordbox (including encrypted 6+ DBs), Serato DJ Pro & Lite, and VirtualDJ Home & Pro (portable and shared installs, Favorite Folders included). Engine DJ and Traktor are on the roadmap.
No. MLD runs entirely locally. No cloud upload, no telemetry of library contents. The local MLD database is encrypted with SQLCipher; your music files never leave the machine.
Music Library Doctor 1.0.19. Auto-updates arrive with release notes in-app — one click to install.
Free tier covers detection and viewing. Lifetime access is $49 — $19 for the first 100 DJs.
