Hi Stan, When you open up the Mackie Control dialog, pressing F1 should bring up the help which will take you through everything in detail. However, here's a quick guide: 1. Go to Preferences->Control Surfaces and add a new surface of type "Mackie Control" specifying it's MIDI IN & MIDI OUT ports. 2. Add a new surface of type "Mackie Control XT"  specifying it's MIDI IN & MIDI OUT ports. 3. Add another new surface of type "Mackie Control XT"  specifying it's M
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