Hi! ReaLearn is just awesome!
I have one feature to suggest: when I open the Edit Mapping window and choose 'Note Velocity' Type, I have only ONE note available as a source controller. And if MIDI track contains a melody with different notes, then I have to duplicate these adjustments 128 times for each note - from 0 to 127 (for all possible cases), and it seems weird to me. May I ask you to add 'Any note' parameter in the dropdown list?