plug your headphones into the behringer (phones will eliminate any problem in your amp/speaker chain). close the preferences panel by clicking ok. click ok - you might get a yellow box saying default audio has changed. don't bother with the asio driver control panel the default should be fine. click it.input on left is already selected then on the right select out 1 and out 2. you should see your behringer driver - UMCASIO. choose audio and then from the drivers drop down choose ASIO. go to options in the menu bar and choose preferences. before you start BIAB plug the behringer in with a usb lead.