I am using a Behringer U-Phoria UMC404HD audio interface with Cakewalk. Cakewalk recognizes the device's midi and audio inputs and outputs. Midi comes through fine. No matter what I do, I cannot get a signal in an audio track. When I plug an instrument into the U-Phoria, I see the signal light and clip flashing on the U-phoria and hear the audio just fine through my speakers, but nothing is coming into Cakewalk. I've tried adjusting the gains, setting input echo to on, nothing works. Please help if you can.