If I plug the Turtle Beaches into the "Game In" part of my Hauppauge HD PVR will it record my voice along with the game audio for the gameplay?
use the software you use to capture the gameplay, and plug the mic into the computer instead of the xbox. you can select to record sound with that i believe. i have not tested this but i will very soon.
On my PS3 I have to plug a mic in to pc as well, today I searched to see if I could record my voice off the xbox. No such luck, looks like I'll be doubling on my mics again.