Why are you using your expensive, dope, mega-rich, classy and better than everyone else speaker system if you have Astros? If you are playing with chat/mic enabled, you are much better off using the actual headphones. There are some great headsets with real or simulated surround sound that rival actual home systems, such as Tritton AX720's or the Sharkoon 5.1.
I don't understand why you are using home theatre if you have Astros.
I've got to go cash some checks and the return some videotapes.