AlphaTheta has announced that VirtualDJ supports OneLibrary, the shared music library format it launched in October 2025 alongside Algoriddim and Native Instruments. You can export a VirtualDJ collection to a USB drive in the OneLibrary format, with playlists, hot cues and beatgrid data carried across, and play it on the CDJ-3000X, CDJ-1500X, XDJ-AZ, XDJ-AN, Opus Quad and Omnis Duo. You’ll need a version of VirtualDJ that supports the format.
VirtualDJ got there first, of course. Its CDJ Export feature has been writing Rekordbox-readable USB drives for half a decade, worked out from the outside with nobody’s permission. What has changed here is the blessing: VirtualDJ has finally come in from the cold.
“DJs shouldn’t have to adapt to technology, technology should adapt to DJs,” says Stephane Clavel, CEO of Atomix Productions. “That’s why VirtualDJ has always prioritised openness and compatibility.” Traktor Pro 4 and Traktor Play, meanwhile, were announced as OneLibrary partners on day one. Nearly a year later, AlphaTheta’s own compatibility page still lists Traktor as coming in the next few months.
What “one library” actually gets you
OneLibrary is a rebrand of Device Library Plus, the format Rekordbox was already writing to USB sticks – AlphaTheta says the two are basically the same thing. Every piece of compatible hardware is AlphaTheta hardware. So a unified library, right now, means everyone else gets to write into AlphaTheta’s format to play on AlphaTheta’s players. The spec isn’t published either, so anyone building independent library tools is still reverse-engineering it, and AlphaTheta’s own FAQ concedes that full compatibility between different applications isn’t guaranteed.
As well as Traktor, Serato and Engine DJ remain outside. So while the benefit to DJs is real – learn on the software you like, turn up at a club, plug in, this shifts the lock-in rather than removing it. The question is no longer which software you prep in. It’s who owns the players you plug into, and whether a standard run by the company that makes them is a standard at all. Time will tell if this all develops into something more meaningful for DJs.
