Hi jths and welcome to this community
I am assuming that you are talking about audio that you have
on each slide and not audio that is set to play for the entire
project. In this case, the best place to look would be at the
timings per slide to ensure that the slide is as long or longer
time wise than the audio you have on it. Secondly, if you have user
interactions on the slide, you need to ensure that the "Stop Audio"
is not selected in the Properties of those click boxes, text boxes
etc.
Cheers
Andrew