Key press toggles deck playback; LED lights (if supported).
Master Your Setup: A Guide to Traktor Pro 3 MIDI Mapping MIDI mapping is the "secret sauce" of Traktor Pro 3, allowing you to customize your workflow and use virtually any hardware—from dedicated DJ controllers to standard keyboards—to control the software. Whether you're integrating a third-party device or looking to add custom "Shift" layers to your existing Native Instruments gear, the Controller Manager is your central hub. Getting Started with the Controller Manager
For DJs with physical disabilities, default mappings are rarely optimized. Custom MIDI mapping allows you to move controls to locations that are physically comfortable for you.
Click the "Learn Mode" box. Now, click your mouse’s side button. You should see "MIDI In" activity in the corner of Traktor.
The Controller Manager is the central hub for all mapping activities.