Captivate 6, audio on slides randomly doesn't play

Question

Hi,
I am working in Captivate 6 adding closed captioning to files originally created in Captivate 5.5 by someone else. The audio will randomly not work on a slide or 2 in preview mode and when published (though it worked perfectly before from 5.5, but had no closed captioning). The odd thing is that it's not always the same slide in which the audio disappears, and that the audio will typically come back a slide or 2 later. It is a rather large file at 105 slides, and the issue starts occurring around slide 75. So I am wondering if splitting up the files might help? And I am not sure if this is an issue with closed captioning, Captivate 6, or both?
Publishing to Flash Player 9 as it's a linear presentation with no interaction.
Here are screenshots of the timeline and properties from a slide that the audio seems to frequently disappear:
Any help/suggestions are appreciated.
Angela

Answer 1

Your issue might be due to the audio getting out of synch with the slides.  Then at some point it has to wait to catch up.
Try this: Your screenshot of the slide timeline shows that the audio file is hard up against both ends of the slide. You need to create a small gap at the beginning and end of the audio file on each slide by just selecting the audio file and hitting the right arrow key twice move it to the right two frames, and then hit the left arrow key to move it back one frame.  This will give you a one tenth second pause at the beginning and end of the audio on that slide.  The end users will not detect the pause but because the gap is there, Captivate will think this piece of audio needs to be a separate clip.  Isolating the audio on each slide this way helps synchronisation of audio with slides.
In any project over a few dozen slides I would never recommend using a single large audio file with markers synched to each slide.  There are just too many different configurations of PC and browser out there that can cause playback to vary.