Developer Guide Analysers
Mixxx uses Queen Mary's (Centre for Digital Music, Queen Mary, University of London) vamp plug-ins for beat and BPM detection:
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Mixxx is a free and open-source DJ software.
Manual
Hardware Compatibility
Reporting Bugs
Getting Involved
Contribution Guidelines
Coding Guidelines
Using Git
Developer Guide
Creating Skins
Contributing Mappings
Mixxx Controls
MIDI Scripting
Components JS
HID Scripting