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What's New:

* EngineOS Export

Mixxx 2.4 adds support for exporting crates, playlists and the library to Engine DJ OS devices, including Denon and Numark standalone controllers. This allows users to prepare their tracks on a laptop using Mixxx and export them to a USB stick for use on a standalone controller at their gig.

Saved Loops

Mixxx 2.4 adds support for Saved Loops, which can be assigned to any Hot Cue slot. If you already have tracks from Serato DJ with Saved Loops, Mixxx 2.4 will import them automatically.

Effect Chains

Mixxx 2.4 introduces Effect Chains, a set of effects which can be saved and reloaded with all their parameters and individual Meta Knob mappings. Effect Chains can also be exported and imported, which allows you to share them with other Mixxx DJs.

Sync Lock Improvements

Mixxx 2.4 adds support for manually selecting the Sync Leader by clicking on the new button with the crown symbol next to the Sync button. This mode is useful when tracks have variable BPM.
All decks with sync enabled will follow the changing BPM of the Sync Leader.

Soundstretcher / Key-Shift Algorithms

Mixxx 2.4 now supports three different key shift algorithms:

- Soundtouch (Basic audio quality - medium CPU usage)
- Rubberband R2 (Good audio quality - higher CPU usage)
- Rubberband R3 (High audio quality - very high CPU usage)

@mixxx sounds like this will improve the quality of tracks that have their tempo decreased? This was the only thing in Mixxx that I wished was better

@earth_walker I'm not sure what you mean? Tempo detection has improved, if that's what you are referring to.

@earth_walker Yes, if you have the Rubberband v3 library and a very fast CPU, it should sound much better!

@mixxx sick! Thanks!