Rekordbox Library Management: A Complete Guide

Every DJ who has used Rekordbox for more than a year knows the problem: your library grows, files move, duplicates accumulate, and Rekordbox gives you almost no tools to deal with it. This guide covers the four most common Rekordbox library problems and the best ways to solve each one in 2026.

The Four Problems

1. Missing Files

You moved your music to a new drive, renamed a folder, or upgraded your computer. Now hundreds of tracks show the orange exclamation mark in Rekordbox. Your cue points and playlists are still there, but the files are "missing." Rekordbox lets you relocate files one at a time or folder by folder, but for large libraries this takes hours. Full guide on fixing missing files.

2. Duplicate Tracks

Re-importing folders, downloading the same track from different sources, merging libraries - duplicates happen naturally over time. Rekordbox has no duplicate finder. Removing them manually risks breaking playlists because you might delete the copy that is actually referenced. Full guide on removing duplicates.

3. FLAC and Lossless Incompatibility

If you collect in FLAC, ALAC, or M4A, those files will not play on most club CDJs. Converting them to MP3 is easy - but getting the converted files back into your Rekordbox playlists with the right order and metadata is the hard part. Full guide on converting FLAC in Rekordbox.

4. Scattered Files

Music in your Downloads folder, on an external drive, on a second SSD, in a Bandcamp folder, in a Soulseek folder. Your Rekordbox library references files from ten different locations. If you want to collect everything to one place for backup or portability, Rekordbox does not offer a way to do it.

Available Tools

Rekordbox Built-In Features

Rekordbox 6 and 7 include basic library management: relocate (one file or one folder at a time), manual playlist editing, and XML export/import. These work for small fixes but are not designed for bulk operations. There is no duplicate finder, no bulk relocate across drives, and no way to collect files to a single location.

Lexicon

Lexicon is a subscription-based DJ library management tool ($10.99/month) that supports Rekordbox, Serato, Traktor and Engine DJ. It offers duplicate finding, playlist syncing across platforms, and library cleanup tools. If you use multiple DJ software platforms, Lexicon is worth considering. The subscription model means you pay as long as you use it.

pyrekordbox

pyrekordbox is an open-source Python library for reading and writing Rekordbox databases. It is powerful but requires Python programming knowledge. Not practical for most DJs, but useful for developers building custom tools.

Mirrorbox

Mirrorbox ($29.99, one-time) is a macOS and Windows desktop app that connects directly to your Rekordbox library. It combines four tools in one:

• FLAC Converter - converts lossless files to MP3/WAV/AIFF while keeping playlists intact
• Health Check - finds missing files (with bulk auto-relocate), duplicates (with playlist-aware safe removal), and unsorted tracks
• Collect & Save - copies your library or specific playlists to a single folder
• Direct Connection - reads and writes to Rekordbox directly, no XML exports or imports needed

Every destructive action has a full undo in the Action History. Changes appear in Rekordbox immediately - just open it.

Which Tool Should You Use?

If you use multiple DJ platforms (Rekordbox + Serato + Traktor), Lexicon's cross-platform sync is its main strength.

If you only use Rekordbox and want an all-in-one cleanup tool without a monthly fee, Mirrorbox covers the most common problems in a single one-time purchase.

If you are a developer who wants to build custom scripts, pyrekordbox gives you raw database access.

Related Guides

• Convert FLAC in Rekordbox Without Losing Playlists
• Fix Missing Files in Rekordbox in Bulk
• Find and Remove Duplicate Tracks in Rekordbox
• FLAC Files Not Playing on CDJ? Here is Why