Hi Deborah,
> So you think that was the problem?
> I just need to ask my users to update their Flash players?
I don't know enough to say for sure, but I am glad to hear it seems to have fixed the issue on your PC.
If your users report that their iSpring presentations are echoing, then if I were you, the first thing I would suggest is for them to update their Flash players.
all the best
Gordon