The cutscenes, like the one with the helicopter when you are loading into the game, and all the ones before each mission, have no sound. The weird thing is, when I change my audio device to my monitor's speakers, it plays the cutscenes through my headphones just fine, but all in game noise goes back to my speakers (such as actual gameplay and sitting in the main menu). I've tried reinstalling the game and installing directx but it doesn't work. How can I go about fixing this?