I've had the following problem since I got this mixer a couple two three years ago, and it's this: I don't know how to shut off the monitored audio from the input devices and listen to them only through the output of a DAW. In other words, even with no DAW running, with the computer not even turned on, I can turn up any input on the mixer and hear it through 'phones. How can I stop the main input from always coming through the headphone monitor so I can hear only what my DAW is capturing?