Effect settings dialog box: Enter-e (dots 1-5)
7) Hot keys for toggling options.
Toggle "display time" between "elapsed time" and "remaining time": t
(dots 2-3-4-5)
Toggle "repeat" between "Yes" and "No": r (dots 1-2-3-5)
Toggle "shuffle" between "On" and "Off": s (dots 2-3-4)