Multi Crew Experience, voice control based crew simulation has now been updated (free of charge to existing customers) to support more complex aircraft.
MCE package for FSX/FSX-SE/Prepar3D/FS9 can now fully handle the Captain Sim 737
MCE package for X-Plane has been updated to add full support for SSG 747-i8
Do not forget to also download the new co-pilot Bill USA recorded voice pack released recently.
You will never fly alone with voice control that is actually fun to use. And with a Demo to boot.