[Zubersoft]

The rate at which the MIDI clock message is sent is tied to the metronome tempo specified by the song that triggered the sending. That's why the MIDI command is currently only supported in songs and not with MIDI actions. There is no easy way to add a button to all songs in the library, as they all require a position on the page, which may or may not be valid for every song in the library.  Through some database manipulation, you could quickly add that MIDI command to every song in your library, but adding a button to stop would require a much more complex database query. You'd also have to be comfortable with performing SQL queries through a tool like SQLite Studio.

In theory, I could probably support triggering the timing clock from a MIDI action so long as a song is currently loaded and visible, otherwise the action would be ignored.

Mike