Anyone here using the x3 with Sonar??? I've successfully used the program for some time with an M-Audio USB device, so I know my way around the program. Using the USB connection on the x3, I don't get any audio back through the headphones, and the output keeps the meters completely in the red if I even breathe on the guitar strings. I'm going to have to assume that I have a defective USB port on my X3.  That being said, the amp models sound amazing using the 1/4" outputs into my M-Audio usb device, then into the computer. That alone is worth the price of the unit. But....sure would like to have the capabilities working.