Sonodex1. Check the file system (exFAT and others)
According to the Rekordbox FAQ, a stick can go unrecognised if its file system is not supported by the DJ device. For exFAT, Rekordbox lists devices that can read it (as of the page: July 2026): CDJ-3000X, CDJ-1500X, CDJ-3000, OPUS-QUAD, OMNIS-DUO, XDJ-AZ, XDJ-AN, XDJ-XZ and XDJ-RX3.
If you play on another device, according to the FAQ you format the stick to a file system other than exFAT. Which file systems exactly apply is shown in the Rekordbox FAQ “Which file system should I format to for SD cards and USB storage?”. Formatting erases everything on the stick: back it up beforehand and export again afterwards.
2. Library on the stick: Device Library or OneLibrary
Rekordbox knows two library formats for sticks: the classic Device Library and the newer OneLibrary. Which one a player reads depends on the model; the compatibility overview is on the Rekordbox page for USB export.
3. Check file formats
Which audio formats a device plays differs from model to model. The Rekordbox FAQ lists FLAC, Apple Lossless, WAV, AIFF, AAC and MP3 at 44.1/48 and 88.2/96 kHz; which device reads what is in the table there. A file in an unsupported format is missing from the player’s list, even if the stick is recognised.
4. Stick size and Rekordbox mode
Requirements for the size of the stick and the Rekordbox settings when exporting are given in Rekordbox’s USB export guide (PDF, see sources). We do not state any limits here that we cannot substantiate. Also try the stick in a different USB port and, if possible, in a second player.
In practice: check before the gig
Do not test the stick only at the venue. Plug it into a player at home or at the soundcheck, open playlists and play a track or two. That way you see straight away whether library and file formats fit together.
Keep a second stick with the same content ready and note which file system you used.
Quellen
- Rekordbox FAQ: Exported SD or USB devices are not recognized (Troubleshooting) rekordbox.com (opens in a new window)
- Rekordbox FAQ v7: which devices support exFAT, file systems, file formats rekordbox.com (opens in a new window)
- Rekordbox: USB export (Device Library and OneLibrary) rekordbox.com (opens in a new window)
- Rekordbox: USB Export Guide (PDF) cdn.rekordbox.com (opens in a new window)
Related terms
Frequently asked questions
Why does my player show no tracks from the stick?
Possible reasons according to the Rekordbox FAQ: a file system the device does not read, a library type it does not display, or an unsupported file format.
Can I format my stick with exFAT?
Only if your device reads exFAT. Rekordbox lists devices for this (as of the page: July 2026). For all others, format to a file system other than exFAT.
Do I have to reformat the stick?
Only if the file system doesn't fit. Formatting erases all data, so back it up beforehand and export again afterwards.