Hi Harriet
First:
There is a large amount of silence at the end of the first narration. I have removed this in our studio.
Second try setting the audio to stop after 1 slide rather than current slide. It SHOULD be the same thing but there's a bug and it isn't. Set the transition time to just a little more than the narration time.
Should then l
ook like this (needs 2010 or 2007 SP2)
Payment in wine is acceptable ;-)