I have a Fender Fuse Floor pedal (electric guitar) which allows audio output to a computer DAW via USB. Sonar X3 can see the Fender Asio driver, but I can't click the box to allow the Sonar to use it. In other words, it's in the Audio setup list of ASIO drivers. The other is ASIO4ALL, which works fine, but won't accept an X.