Hi been following this problem with great interest. You've hit the nail on the head c_major
Had sound issues with the download of this prog myself so went to options as suggested and checked audio setting, located top of prog on RHS
It will most probably be already set on Default playback device, BUT you need to specify which one you want i.e. Comm headphones or Speakers, otherwise it will be muted permanently.
BTW on my first try, on selecting headphones, nothing occurred, but go back and click again and you'll be good to go
Am using VideoPad v6.10 ?
(Posted 09/08/2018)
p.s. Great web site and forum, came across it by chance.