Currently the only commands that can start a recording are Record New
Track and Record New Part, you can find the MIDI mapping in the manual or on the post here there are no commands meant for playback yet, however Record New track will stop the recording and playback if sent on the last track (track 2 in 2x2 or track 6 in 6x6).
We are aware this isn’t ideal and hope to expand this functionality soon.