Stop prepping.
Start playing.
Convert, tag, check the quality and file into Apple Music or Engine DJ: what used to take four or five apps, Surco does in one. From minutes per track to a couple of seconds.
Anti-fake analysis
The spectrum doesn't lie
Some "lossless" files are just low-quality MP3s dressed up to look hi-fi — and they sound worse on a big system. Surco spots the missing highs and flags the track before it reaches your set.
full sound up to ~22 kHz — nothing missing. The real thing.
everything cut off at ~16 kHz — the highs are gone. A fake.
One app, not five
The work of five apps, in one click
Converter, Discogs, tag editor, spectrum analyzer and Apple Music: five programs, four or five minutes per track. Surco folds that whole flow into one button.
- ~45 sCheck the spectrumSpek
- ~45 sConvert to AIFFconverter
- ~60 sLook up the info on Discogsbrowser
- ~90 sWrite the metadatatag editor
- ~30 sImport to Apple MusicMusic
jumping between tools · repeating on every track
- · lossless AIFF, WAV, FLAC or ALAC, or MP3
- · Discogs metadata
- · embedded cover art
- · grouping and tags
- · spectrum analysis
- · to Apple Music or Engine DJ
one click · one track ready
* Manual flow shown as an example; steps and tools vary from person to person. Estimated times.
How it works
Three steps and you're playing
Drop your tracks
Drag your WAV, FLAC, AIFF or MP3. Surco reads the tags and cover art on the fly.
Pick the release
Search Discogs and apply artist, album, year, genre and cover art in one click.
Export and you're done
Convert to AIFF, WAV, FLAC, ALAC or MP3, check the spectrum and send the track to Apple Music or Engine DJ.
Features
The whole flow, in one app
Convert
instead of a converter
- ·AIFF, WAV, FLAC, ALAC or MP3, any to any
- ·Already in that format? Copied as-is, instantly
- ·Quality your way: MP3 bitrate, bit depth and sample rate — or keep the source's
- ·Match the volume to one loudness or peak
- ·Trim the silence off the head and tail, with both cuts visible on the wave
- ·You pick where each one lands: a folder, next to the original, Apple Music or Engine DJ
- ·Re-export without touching Traktor cue points
Tag
instead of Discogs, Bandcamp and Deezer in the browser and a tag editor
- ·Fill artist, album, label, BPM and key from Discogs, Bandcamp and Deezer
- ·Match a whole release by track length
- ·Bulk-edit and find-and-replace with regex
- ·Pull the cover from Discogs or drop your own
- ·Your edits save themselves: recover the session even after a crash
Analyze quality
instead of a spectrum analyzer
- ·Draws the spectrum and catches fake-lossless MP3s
- ·Colour read-out: LUFS, true peak, dynamics and noise
- ·Waveform with zoom, real clipping in red and a preview of the normalized result
- ·Repairs vinyl clicks: marks each one on the wave, jumps you from one to the next, then A/B the repaired track against the original without a gap in the audio
- ·Detects BPM and key from the audio itself
- ·Warns if a track is already in your Apple Music or Engine DJ — and filters your tracks to the ones you're missing
Organize & export
instead of your library manager
- ·Send to Apple Music with tags and cover, even WAV
- ·Straight into your Engine DJ (Denon) library: cover, rating and playlist
- ·Export the queue to rekordbox, Traktor, Serato or M3U8
- ·Name files — and titles — with {artist} - {title} templates
Keyboard first
Fly without touching the mouse
A command palette and shortcuts for the whole flow — add, tag, analyze and process track after track without leaving the keyboard, and remap any of them.
Pricing
Free, forever
Surco is free and complete — no account, no subscription, no limits. If it saves you hours, you can support its development.
Install
Download and install
Download it for your system or install it with Homebrew. Either way, it updates itself.
Or with Homebrew
$ brew install --cask surco-app/surco/surcoHomebrew: macOS only. Windows and Linux, from the download button.
FAQ
Before you download
Is it really free?
Yes. Surco is free and complete, forever: no account, no subscription, no limits. If it saves you hours, you can support its development with a donation.
Is it a tag and metadata editor?
Yes, and more. Surco edits your music's tags and metadata (artist, title, album, year, artwork…) and fills them in from Discogs, Bandcamp or Deezer. But it also converts between lossless formats, checks audio quality and organizes your library: what you'd do with a tag editor and three other apps, in one.
Does it touch my original files?
By default, no. Converted tracks are saved to a separate folder (Music/Surco) and your originals stay intact. They're only replaced if you turn on "Overwrite original".
Does it keep cue points?
When it re-exports without touching the audio, yes: your Traktor cue points pass through intact. Turn on silence trim, normalization or click repair and the audio is re-encoded: with trim, the cues are re-anchored to whatever you cut off, and on WAV and FLAC they're lost. On MP3 and AIFF they survive. Surco warns you right in the section before you convert.
Can I trim the silence off my rips?
Yes. Surco detects the silence at the head and the tail and shows you both cuts on the waveform, with zoom and millisecond nudges, so you can hear how it lands before applying anything. Trim one track or a whole selection at once. Note that trimming re-encodes the audio, so check the cue point answer above.
What about vinyl clicks and pops?
Surco detects them and interpolates them away as it converts, with four strengths. It marks every click it finds on the waveform so you can jump from one to the next, and it renders the repaired track so you can A/B it against the original while it plays, with no gap in the audio — so you hear whether the repair took the clicks out, and whether it took some of the music with them. It ships off.
Does it work with Denon gear (Engine DJ)?
Yes. Pick Engine DJ as the destination and every converted track is registered straight into your Engine DJ library — with its cover, rating and a configurable playlist — ready to sync to your players. It also exports collections to rekordbox, Traktor and Serato.
Windows says "Windows protected your PC". Is it safe?
Yes. That's the SmartScreen notice for new apps not yet signed on Windows: click "More info", then "Run anyway". On macOS, Surco is notarized by Apple and opens with no warnings.
Which formats does it support?
It converts between lossless AIFF, WAV, FLAC and ALAC and MP3, any to any. The quality is yours to pick: MP3 bitrate (320 down to 128 kbps, or VBR V0/V2), bit depth and sample rate — by default the source's are kept. It also reads M4A, AAC, OGG and OPUS.
What about broken WAV files?
Old downloads sometimes carry malformed WAV headers that other apps choke on. Surco repairs them on a temporary copy as it reads — your original is never touched — so the track plays, analyzes and converts normally.
What if the app closes mid-session?
You lose nothing. Surco saves your unapplied edits on its own as you work, and on reopening it offers to restore the session with everything just as you left it — metadata, covers and matches included, even after the machine froze.
Which languages is it in?
Spanish, English, German, French and Portuguese (Brazil). It follows your system language by default, and you can pin one in Settings.
Which systems does it run on?
macOS (Apple Silicon and Intel), Windows and Linux (AppImage). It updates itself, so you'll always have the latest version.