Audio ComparerFind & Remove Duplicate Songs by Sound — Not Just File Names
Audio Comparer finds duplicate songs by analyzing their actual audio — not file names, tags, or sizes. Renamed, converted or untagged, it still finds every copy and keeps the one with the best real quality.
Audio Comparer is a Windows program. Send the download link to yourself and open it on your PC.
Send the link to my PC
- 100% offlineyour music never leaves the PC
- 10–12 songs / secondon a modern multi-core CPU
- One-time paymentno subscription
- Since 2008sold & improved for 18 years
How It Works — In 3 Simple Steps
Clean up your music library in minutes and free up valuable hard drive space.
Scan
Audio Comparer listens to your entire music collection — folders, drives or a NAS, including whole-album CUE images.
Analyze
It creates a “sound fingerprint” for each track and groups copies by how they sound — not by file name, tags or size.
Remove
The program marks the extra copies and keeps the best one — you review the marks and delete the extras with one click.
Keeps the copy with the best real quality
Other finders keep the biggest file or the highest bitrate. But a 320 kbps MP3 can be a re-encoded 128, and a FLAC can be a converted MP3. Audio Comparer checks what is really inside every copy, then offers to mark the extra copies for you.
- Fake 320 kbps — spots MP3s transcoded from 128 kbps
- Fake lossless — FLAC, WAV or APE made from MP3
- Clipping and real bandwidth — measured, not taken from the label
- Your rules — favourite folders, tags, cover art, file date: set the order in which they win
Is your FLAC really lossless?
Drop a file below. The same analysis the program uses runs right in your browser — nothing is uploaded.
Want the full report with charts and FAQ? Open the free fake FLAC & 320 kbps checker
Try it on two songs — free online
Upload two MP3 or FLAC files and see the sound similarity score — the same engine as Audio Comparer.
Compare online →
New: Audio Scanner
Find a jingle or ad inside hours-long recordings — 100% offline. Free download.
Learn more →Best duplicate music finder for PC
What to look for in a duplicate music finder and how the popular approaches compare.
Read the guide →How to remove duplicate songs step by step
From the first scan to deleting the extras safely, with screenshots.
Read the guide →Why Audio Comparer Works When Others Fail
| Situation | Name / tag finders | Audio Comparer |
|---|---|---|
| Files renamed or untagged | ||
| Same song in different formats or bitrates (MP3 vs FLAC, etc.) | ||
| Missing or incorrect ID3 tags | ||
| Every track of a whole-album FLAC or APE with a CUE sheet | ||
| Keeps the copy with the best real quality | ||
| Groups similar tracks in a visual tree for easy review | ||
| Compare two audio files side by side — waveforms, similarity score, synced playback |
Powered by Audio Fingerprinting Technology
Unlike basic duplicate finders that rely on file names or tags, Audio Comparer actually “listens” to your music — just like a human ear. Using advanced audio fingerprinting (the same tech behind our award-winning Image Comparer and Video Comparer), it identifies duplicates based on actual sound.
Supports MP3, WMA, FLAC, WAV, AAC, OGG, APE, WavPack, AIFF, and more — no matter the codec or bitrate — as well as whole-album images with a .cue sheet.
- MP3
- FLAC
- WAV
- AAC / M4A
- WMA
- OGG
- OPUS
- APE
- WavPack
- AIFF
- MPC
- AC3
- CUE images
Perfect for
- Music lovers with messy libraries and hidden duplicates
- Podcasters & DJs who need clean, reliable audio files
- Broadcasters avoiding accidental repeats
- Anyone running out of disk space due to redundant tracks
- Windows users with duplicate tracks scattered across folders and drives
See what you're getting
What Users Say
The program is really a hit! My audio library is now absolutely fancy - neat and tidy now as never before!
Audio Comparer did its very best and coped with it masterly! Highly recommend to all people having large music collections!
Audio Comparer managed to organize several thousands of audio files - all having different audio formats! Absolutely bang-on!
Try It Free
The free trial lets you scan your entire library and preview all duplicates. You can’t delete them in trial mode — but once you buy a license, one click unlocks full functionality.
Home
- No trial mode limits
- Free minor updates
- Free technical support
- Key by email in minutes
Business
- Everything in Home
- Licensed for office use
- Free minor updates and support
Save your money
- Duplicate music and photos
- Same fingerprinting engine
- Two Home licenses
Secure checkout by PayPro Global · cards, PayPal and crypto · no subscriptions
Questions before you download
What does the free trial do?
It scans your entire library, groups all duplicates and marks the extra copies, so you see exactly what would be removed. Deleting the extra copies is unlocked by a license.
Do my files need correct tags or names?
No. Audio Comparer compares the sound itself, so renamed files, files with wrong or missing ID3 tags and copies in other formats are all found.
Will it delete anything without asking?
No. The program only marks the extra copies. You review the marks and decide what to delete, move or copy.
Is my music uploaded anywhere?
No. Fingerprinting and quality analysis run on your PC; the program works fully offline.
How many files can it handle?
Libraries of tens of thousands of tracks are fine: it processes 10–12 songs per second on a modern multi-core CPU.
Do I need to buy again after reinstalling Windows?
No. Your license stays valid when you change computers or reinstall Windows. If you lose the code, the automatic reminder at bolidesoft.com sends it again.
Free Up Space in Your Music Library — in Minutes
Download the free trial and see exactly which songs are duplicates — instantly.
Download & Clean Your Music Now