Audio on pop up

Hey all,
I'm having a mind block on how to solve this issue..........
Layer with audio comes up when all other layers have been opened (aka buttons on base have visited state).  works well.
BUT
when the learner returns to the slide, (slide state set to return to initial state so the audio can replayed on the base layer), the audio on the final layer plays after they return to each layer (as the rule is - show final layer when the audio completes if all the buttons are visited). SIGH 

Thanks in advance.....