I may have found the culprit. The clip is <9 secs long; slide duration is 10 secs (for testing). My buttons are on the master slide. The audio will loop, but stop at 10 secs.
If I move the Next button (which has the pause) off the master to the actual slide, it works fine. Soooo, apparently the pause on the master overrides the looping capability. Can you confirm?


Interesting, never did check that but you are correct. Looping is disabled because of that shape button on the master slide.
I checked in CP7, CP8 and CP9. It works fine in CP7 but is broken in CP8 and CP9. I will log a bug report.