Audio Cuts out on random slides

Hi Leslie.  Thanks for the quick reply.  The audio file names were simply "slide 01.mp3" etc.  None of the file names were more than 10 characters.  The most odd thing is that when I republish the course, some pages no longer have the audio drop-out issue, while others that didn't have the issue begin dropping audio.  I've tried adjusting the audio quality to the maximum 160kbps bitrate on publish and then dropped it to 128 kbps, and this doesn't seem to have any predictable effect.  Also, it doesn't seem to affect audio that is recorded directly with Storyline through the microphone - only imported audio.  Everything works fine in audio recorded within the editor.

One thing I've noticed in older courses, is a distinct digital "chirp" sound in some of the audio files that preceded an audio drop-out in the published file.  It was as if some digital bits got lost when the storyline file itself was saved.  These weren't present in the initial audio files, but seem to have crept in as errors over time.  I have one particular course that seems to drop-out audio every single time I go in to edit and publish a new version of the course.  Often I'll go in to investigate the cause and find another tiny digital chirp has appeared in one of the audio files. I'm not sure if any of this is helpful in uncovering the mystery, but it's just things I've noted over time.