Guides · Find & remove duplicate tracks

🎯 Duplicate Detection

Acoustic fingerprint matching catches the same recording across formats, bitrates, and tag spellings — even when filenames disagree. The Group Scorer ranks copies so the cleanest stays and playlists never break.

6 guides in this category.

DJ-aware cleanup

The duplicate finder built for DJs

Most dedupe tools treat your DJ library like a folder of loose MP3s. MLD knows which files your playlists reference and re-points them before anything gets touched.

For NAS libraries

Clean a music library that lives on a NAS

Duplicates, fake-320s, scattered folders — on a Synology, QNAP, Unraid, or any SMB share. Removed files stay restorable on the drive itself, never silently deleted.

Duplicate detection

Find duplicate songs your tags can't

Acoustic fingerprint matching catches the same recording across formats, bitrates, and tag spellings. Works on any music folder — no DJ software needed.

How-to

How to find duplicate songs across different formats

Acoustic fingerprint matching catches the same recording even when the filename, tag, format, or bitrate disagree. Mac & Windows, no DJ software required.

Library cleanup

Remove duplicate tracks from your DJ library

Cross-library duplicate detection across Rekordbox, Serato, and VirtualDJ. Confidence-tiered groups, per-copy quality scores, and a recommended keeper — with every playlist re-poin…

What is

What is acoustic fingerprinting for music libraries?

A content-based hash of the audio signal itself — stable across formats, bitrates, and tag spellings. It's what makes cross-format duplicate detection possible.

Other categories

Library Migration · Library Repair · Library Organization · Audio Quality Analysis · Folder Library Mode · DJ Software Setup

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Free tier covers detection. Pro is a one-time lifetime license — current founding pricing is on the homepage.

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