Assign play/stop/record buttons to a controller.

Got a great idea for the future of LMMS? Post it here.
Forum rules

Make sure to search to see if your idea has been posted before! Check our issue tracker as well, just to make sure you are not posting a duplicate: https://github.com/LMMS/lmms/issues

I don't fully understand the difficulty behind this feature, but it would be awesome to be able to (at least) play/stop from my MIDI controller.
In case, the space bar of the keyboard allows you to do this (you must first select one of the editors, SongEditor, BBEditor, AutomationEditor, Piano-Roll).
Good enough by now, thanks!!