Surco

Convert

• Any format to any AIFF, WAV, FLAC, ALAC or MP3. It also reads M4A, AAC, OGG and OPUS, which always transcode.
• No re-encode if it matches Copies the bytes as they are; on MP3 and AIFF over APFS it is an instant clone at any size.
• Quality your way MP3 bitrate, bit depth and sample rate — or the source's own, which is the default.
• No silent widening Pin the depth so a 16-bit rip never quietly comes out at 24. Leveled volume One constant gain, and a limiter only when the target cannot be hit otherwise.
• Silence trimming The cut visible on the wave, with millisecond nudging.
• Rescues broken WAVs The header other apps choke on, repaired on a copy. Your file is never touched.
• You choose where it lands A folder, beside the original, Apple Music or Engine DJ.

Tag

• Discogs, Bandcamp, Deezer Artist, album, year, BPM and key. Label and catalogue number come from Discogs only.
• Matches a whole release By track length, which tells two cuts apart when the title cannot.
• Bulk editing The fields a release shares, plus find and replace with regex.
• Artwork From Discogs or your own, with square cropping and a size cap you set.
• ID3v2.3, not v2.4 So CDJs and rekordbox read it without surprises.
• Ratings that round-trip In both frames Traktor and Windows Media Player read.
• Apple Music grouping It writes that into its own frame, invisible to almost every other tool.
• Tags other programs left Inspect them and remove them one by one, or wipe the whole sheet.
• Nothing gets lost Edits save themselves: the session comes back even if the app dies mid-crate.

Analyze quality

• Catches disguised MP3s Draws the spectrum with the codec cut marked on the image.
• Three things, not one A transcode, treble regenerated by an enhancer, and hi-res that was a stretched 44.1.
• No false positives It checks there is a real cut first: a dull master is not a fake.
• Colour-coded read LUFS, true peak, dynamics, L/R balance and noise floor.
• Clipping like Audacity Same sample-by-sample threshold, so the red marks agree with theirs.
• Waveform zoom ×256 Re-decodes the visible slice instead of stretching pixels.
• Vinyl clicks Switch between the original and the repair while it plays, with no gap, to hear what went.
• BPM and key From the audio itself, always as a suggestion you confirm.
• What you already have Tells you if a track is in your Apple Music or Engine DJ, and filters the rest.

Organize and export

• Apple Music With tags and artwork, even on WAV. macOS only, and never FLAC: Music cannot take it.
• Artwork inside a WAV Which on its own holds neither artwork nor metadata.
• Traktor cue points Intact between MP3 and AIFF, and into FLAC. Trim and the grid re-anchors by phase.
• rekordbox, Serato, M3U8 Bridge files: paths and metadata — Serato's crate, paths only. No cues, no ratings.
• Name templates Files and titles from {artist} - {title}. A slash inside a field never makes a folder.