Using Hoster 4.21 - Video issue

[DuetEntertainment]

Computer Type - Laptop (Acer Aspire 7736)
Operating System- Windows 7 Home Premium
Processor speed- 2.2 GHz
Ram in computer- 3.0 Gb
Hoster Version- 4.21
A detailed description of the problem. -
Re-installed Hoster program on my Laptop. Before re-install, was not having an issues, turned out to be a hardware issue (VGA conversion unit) and not a software issue.

With the re-install I am now having with issues with playing Videos.
- Videos play on all screens, but have no sound.
- Videos play from insta-buttons without issue (Screen or sound)

What am I missing to get Videos to play normally once again??