What we check
Codec & container
We parse the real codec/container setup to detect files that look valid in apps but fail in booth playback.
Sample rate & bit depth
Tracks are checked against conservative CDJ-safe ranges, including 32-bit float and high-rate edge cases.
Metadata & structure
We validate internal file structure, tags, and seekability problems that can trigger load or playback failures.
File path & naming
We flag path lengths, invalid characters, and structural problems that prevent CDJs from loading tracks from USB.
Model-specific rules
Format support differs by CDJ generation — we evaluate tracks against player-profile constraints, not one generic rule.
Corruption screening
We verify whether files can be decoded and loaded reliably so damaged or unstable tracks are caught before export.
The Boothready process
Upload
Drop individual files or multiple folders. We queue every track automatically.
Analyse
Every track is validated against CDJ rules — codec, sample rate, metadata, model-specific limits — and sorted into clean, fixable, or failed.
Download
Get one clean package — fixed files plus a detailed per-track report, ready for USB export.
CDJ error code hubs
Each hub maps every known cause for that error code with direct links to the specific fix.
DATA FORMAT ERROR — 11 causes mapped
The most common CDJ error. Causes range from 32-bit float WAV and EXTENSIBLE headers to unsupported sample rates, FLAC model limits, and DRM-protected files.
View hub E-8304DECODE ERROR — decoder-level failures
Triggered when the CDJ reads the file header but the decoder fails. Usually a 32-bit float WAV, corrupt header, or EXTENSIBLE container.
View hub E-8302PLAYER ERROR — strict CDJ-3000 decoder
Occurs during decode itself. CDJ-3000 throws this significantly more often than CDJ-2000NXS2 due to stricter ISO MP3 compliance.
View hub E-8306NO FILE — database-to-file mismatch
Track appears in your library with waveform and cue points, but the audio file is not where the rekordbox database expects it.
View hubBefore you ask.
Straight answers, no marketing fluff — the way you need them in the booth.
E-8305 is the most common CDJ error and covers more than ten distinct causes — including 32-bit float WAV, WAVE_FORMAT_EXTENSIBLE headers, out-of-range sample rates, FLAC on unsupported models, ALAC, and DRM-protected AAC. The same error message can point to very different problems, which is why identifying the exact cause matters before attempting a fix. Boothready flags the specific cause for each affected track.
rekordbox uses a software audio engine that is far more permissive than CDJ hardware decoders. Files with 32-bit float format or EXTENSIBLE headers — and on older players, 96 kHz sample rates — preview and analyse correctly in rekordbox while consistently failing on a physical CDJ. This is one of the most common sources of confusion with E-8305 and E-8304.
E-8305 (DATA FORMAT ERROR) triggers when the CDJ does not recognise or support the format at all. E-8304 (DECODE ERROR) triggers when the format was partially recognised but the decoder failed — typically a 32-bit float WAV or corrupt header. E-8302 (PLAYER ERROR) occurs during the decode process itself and is most common on CDJ-3000 with non-standard MP3 frames.
No. 32-bit float WAV is a standard export format in Ableton, Logic, FL Studio, and Bitwig, but no Pioneer CDJ supports it. It triggers E-8305 or E-8304 and looks identical to a standard WAV on your computer. Converting to 16-bit PCM WAV is the safe option. Boothready detects and auto-fixes this automatically.
No. FLAC and ALAC (.m4a Apple Lossless) play on newer players only: the CDJ-2000NXS2, the CDJ-3000 series, the CDJ-1500X and the XDJ-1000MK2 (at 44.1 and 48 kHz) — from USB or SD, not from discs. Older models such as the CDJ-2000NXS, CDJ-900NXS or XDJ-1000 cannot play either format and show E-8305. Boothready flags FLAC and ALAC files so you can convert them to WAV for any setup.
Yes. Boothready auto-fixes the majority of CDJ compatibility issues in batch — including format tag rewrites, sample rate conversion, multichannel downmix, codec conversion, and container rewrites. The exception is DRM-protected AAC (.m4p iTunes Store purchases), which cannot be bypassed and are flagged for manual replacement.
You can check WAV, MP3, AIFF, FLAC, and M4A files. Upload individual tracks or one or more folders — Boothready queues every file automatically.