In #85 the voice context will be renamed to audio context, so the CValueObject classes will be renamed to namespace Audio too.
As #140 changes many CValueClasses, this crossover change is done in the same unit of work.
The second if condition was always false, hence the pushToTalk boolean
was never resetted to false.
Add also mandatory and recommended respectively calls to CallNextHookEx.
Otherwise other applications might run into problems.
Change virtual key VK_LCONTROL, since VK_CONTROL did not have any effect.
