Originally Posted by: KasperowCan the Fender Mustang use the USB-connection to connect to Audacity? I've tried but I haven't had any luck getting Audacity to recognise the Amp through USB, but it doesn't have any issues if I just use a cable between the "Phones"-plug and my computer's Mic-plug.

Does your amp have some kind of PC drivers? If so, have you installed them? I don't know anything about audacity. Does it have options to allow you to choose different input sources?