How to Find Duplicate FLAC Files on Mac

As a DJ, maintaining a clean and organized music library is crucial for a seamless performance. Duplicate FLAC files can clutter your library and make it difficult to find the tracks you need. Fortunately, finding and removing these duplicates on a Mac is straightforward with the right approach.

In this guide, we'll show you how to find duplicate FLAC files in your music folders with Finder, and how to clean them up inside Serato DJ Pro if that is where you play them.

1. Back Up Your Music Folder

   Before you change anything, copy your music folder to another drive. If you delete the wrong file, you can restore it from the copy.

2. Find Your FLAC Files in Finder

   Open your music folder in Finder and search for .flac in that folder. Switch to list view and sort by name, then by size. Copies of the same track usually sit next to each other with the same or a similar name and a matching size.

3. Confirm the Duplicates

   Files with the same name and size are likely copies, but check before you delete. Listen to any pair you are unsure about, because files with similar names can be different mixes. General duplicate file finders can also compare file contents to catch exact copies with different names.

4. Clean Up Inside Serato With Dupes

   If your FLAC files are in a Serato DJ Pro library, Dupes can find duplicates there by comparing metadata such as title, artist, bitrate and file type, and it updates your Serato crates when it removes a copy. Dupes works only with Serato DJ Pro libraries, not with loose folders.

5. Organize Your Library

   With the duplicates removed, take some time to further organize your library. This can include renaming files or arranging them into specific folders. For more tips on organizing your library, check out our guide on cleaning up your DJ music library on Mac.

Eliminating duplicate FLAC files not only frees up space but also ensures you have a streamlined library ready for any gig. For additional preparation tips, see our guide on preparing your DJ library before a gig. By keeping your music library organized, you can focus more on your performance and less on searching for tracks.

For those using DJ software like Serato, you may also find our guide on finding duplicate tracks in Serato DJ useful.