Playing audio again after it has completed

I'd like the play button to work even if the audio has already played and completed. Currently the play button on the built-in seekbar doesn't work if the audio has already completed. So if I view a slide with audio and the audio completes, pressing "play" again doesn't do anything. I know that I can drag the seekbar to the beginning, or, if I didn't need my slides to be set to Resume Saved State (see below), I could use the refresh button.  I've been trying to figure out a way to reset the slide to the beginning of the timeline when it completes, but don't see any way of doing this. Is there a way to get the Play button to reset when the timeline completes, or in some other way get the timeline to reset? 

A somewhat related issue that I'm having is that I have to have all of my slides set to Resume Saved State (a progress counter I'm using requires that) so if a user revisits a slide that they left halfway through, it picks up on the timeline wherever they left off. Is there any way around this? The only thing I have going on on the timetime is audio, but our client understandably wants to be able to revisit a page and have the audio play from the beginning, not part way through. Any suggestions?