Hello, I use to be able to record everything in mono no problem. Today all of a sudden i can no longer record in mono. The only options are stereo, left,right. I'm assuming the cause is because i purchased a usb logitech head set for video gaming purposes. obviously the usb headset is not plugged in, and i did restart the computer. ALSO, I AM NO LONGER ABLE TO MONITOR MY VOLUME WHILE RECORDING. i'm using m audio fast track pro as an audio interface i'm using sony vegas pro 8.0 i'm using a mono mic made by akg. i'm using windows xp. does anyone have a clue on how to resolve this issue? thank you much.