Hash-based and metadata-based detection across Rekordbox, Serato, and VirtualDJ.
Ripping CDs, buying from multiple stores, syncing between machines — after a few years every DJ has the same track two or three times in different folders, different bitrates, and sometimes different metadata. Rekordbox and Serato don't have built-in dedupe that understands both exact and near-duplicates.
Supported today
Rekordbox · Serato DJ · VirtualDJ (incl. Favorite Folders) on Windows 10+ and macOS (Apple Silicon + Intel).
Most dedupe tools only look at filenames. MLD combines file hash, audio fingerprint, and DJ-library context — so 'Track.mp3' at 320 kbps wins over 'track(1).mp3' at 192 kbps even if both are in your Rekordbox playlists.
A content-based hash: two files with different tags or bitrates but the same audio match. Useful when you have the same song from multiple stores.
No. MLD updates your DJ library's playlists to reference the surviving copy before you delete anything.
Your choice. Mark, move-to-folder, or trash — MLD never hard-deletes without confirmation.
Yes. MLD backs up your Rekordbox / Serato / VirtualDJ databases first, and the file operations themselves are reversible from Trash/Recycle Bin.
Free tier covers detection and viewing. Lifetime access is $49 — $19 for the first 100 DJs.
