This is going to be a loaded question with lots of info, so I'll split it up into two parts... What I WANT To Happen I have an Audix mic in front of my guitar cab recording and sending to my computer then into Logic. I want to be able to hear the click/drum track from a pair of USB headphones. What ACTUALLY Happens Logic won't accept both the Headphones and the XLR Mic at the same time. Because the headphones have a built in mic, and therefore Logic wants to use it to record. Any help would be greatly appreciated, thanks.