Yes, I noted that in the post. Cantabile only has looping functions for media tracks.
Ok, this could be set up but would require that you had a MIDI track or audio track to set up the loops on. On Cantabile loops are set up using ranges that are set in the time line view. The drawback of the looping function is that it ends when it finishes the loop count. I found a way to do what you talked about by making some bindings that did the loop counting instead of the built in loop counter. This allowed the breaking of the loop and advancing it to the next range. It is a combination of position bindings and timeline ranges. See this thread
There is also another related thread with the looping rack I made. Read through it and I’d be happy to explain any questions.
Dave