Audio file adds silence once track is done?

Hello Fellow Storyline Friends,😀

I have one slide in my deck that storyline adds silence to at the end of the audio track.  I have checked the audio editor and there is no additional space where silence would be.  I have checked my timeline and can't find anything.  I've searched online for clues to what might be happening but can't find just the right answer.  Can anyone have a look and let me know where I've gone wrong?  Thanks in advance for any help you can offer.  The slide is attached.

Nancy