PowerPoint doesn't play the entire audio clip in Slide Show mode

[rrowan]

Hi!



First post so go gentle. I've tried searching but without any success.

I'm in the process of creating a narrated presentation, so each slide has a voiceover in the form of a small mp3 audio clip.

The audio was recorded outside of PowerPoint using Windows sound recorder. I've since done some minor edits to those clips and converted them to .mp3 files. It's those .mp3 files that I've added to the presentation.

When in editing mode in PowerPoint (2010 btw) the clips play in full. However, in slide show mode each clip is cut short.

The .mp3 files play in full outside of PowerPoint - say, in VLC.

It doesn't seem to make any difference whether the audio starts automatically or upon mouse click; or whether the speaker icon and player are visible or not; or whether the clip is to auto rewind when finished.

I'm stuck. Any help would be appreciated.