I am creating engaging educational videos using PowerPoint, and use the Insert Audio options to add professional voice over to each slide (in MP3 format). However, when I add the audio, it seems to inadvertently 'extend' the period of time before the slide transitions to the next slide, sometimes hanging for several seconds. I have found a quick workaround which requires me to select the option to Stop Playing after 1 slide. This works perfectly, so I add the audio, match animations to the audio then on each slide, I have to select the audio in the animation pane and amend the the option to Stop Playing after 1 slide. However, when I save the file, my selections for each slide are not saved, meaning that if I close the file before exporting to video, I have to amend the settings again and as you can imagine, if my presentation has over 30 slides, this is a real pain. If Microsoft could fix this, it would be really beneficial to me.