How do I audit Serato crates or Traktor NML files?

Simply drag and drop your exported Pioneer Rekordbox XML, Traktor collection.nml, or native Serato binary .crate files (found in your _Serato_/Subcrates folder). The tool automatically parses all formats client-side in your browser.

How do I export my Rekordbox XML file?

In Pioneer Rekordbox, open Preferences > Advanced > Database > Rekordbox xml. Under File, click 'Export' or locate your library XML file. You can also right-click any playlist and choose 'Export Playlist to XML'.

Does this tool upload my music files to a server?

No. The Crate Health Checker runs 100% locally inside your web browser. No audio files, playlist XML data, or binary crate files ever leave your machine.

Why is 48 kHz or 96 kHz a warning for CDJs?

While modern CDJ-3000s handle multiple sample rates well, older Pioneer club hardware (CDJ-900, CDJ-2000NXS) resamples 48 kHz or 96 kHz files in real time to 44.1 kHz, which can introduce subtle high-frequency phase smearing and pitch jitter during live pitch bending.

100% Client-Side Privacy — Zero Audio Uploads

Rekordbox, Traktor & Serato Crate Health Checker

Audit your Pioneer Rekordbox (XML), Traktor Pro (NML), and Serato (.crate) playlists before gig night. Instantly inspect sample rate mismatches (SRC), low-bitrate MP3s, missing cue grids, and intersample clipping risks that cause trim knob drift in the booth.

Drag & Drop your rekordbox.xml, collection.nml, or .crate

or click to browse your exported collection or Serato Subcrates. All processing executes 100% in-browser.

Crate Health Score

92/100

CLUB READY

Tracks Audited

0 MP3 • 0 WAV • 0 FLAC

True-Peak Risk

Mastered at digital 0 dBFS

SRC Mismatch

48 kHz / 96 kHz triggers

Est. Trim Drift

±0.0 dB

Loudness range spread

PLAYLIST / CRATE:

FILTER:

#	Track Title & Artist	Format	Bitrate	Sample Rate	Diagnosis & Risk	Waveforge Action

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AUDIO SCIENCE FIELD MANUAL

Why DJ Crate & Playlist Hygiene Matters in the Club

The 0 dBFS Intersample Peak Danger

When tracks are mastered right up to digital zero (0.0 dBFS), the digital-to-analog converter (DAC) inside a Pioneer CDJ-3000 or DJM mixer must reconstruct a continuous analog wave between samples. This reconstruction arcs above digital zero by +1.5 to +3.0 dBTP. On high-gain festival PAs, these intersample peaks cause audible converter clipping and harsh high-frequency smear.

Sample Rate Conversion (SRC) on Older CDJs

Tracks purchased at 48 kHz or 96 kHz force older Pioneer club gear (CDJ-900, CDJ-2000NXS) to run real-time hardware sample rate conversion down to 44.1 kHz. This real-time filtering can cause transient blunting and pitch artifacts when adjusting tempo sliders. Uniform 44.1 kHz 16/24-bit masters guarantee clean native playback across all Pioneer generations.

Why Rekordbox Auto-Gain Fails

Rekordbox computes gain by averaging the entire audio file from beginning to end. If a track has a quiet 2-minute ambient intro followed by an aggressive drop, the whole-track average artificially pulls the volume up by +3 to +4 dB, slamming the mixer channel meter in red. Waveforge analyzes the loud 20% drop sections ($LUFS_{rep}$) to ensure seamless transitions.

Lossless MPEG FrameGain vs Re-Encoding

Re-encoding MP3s in a DAW causes generational loss: the psychoacoustic model runs a second quantization pass, smearing high-frequency hi-hats. In contrast, Waveforge modifies the 8-bit global_gain byte inside the MPEG frame header in 1.5 dB steps with zero decompression, preserving bitstream fidelity and all Pioneer cue points.