I do streaming live music using a single large diaphragm cardioid mic. I recently bought a Behringer U-Phoria two channel interface. When using just one channel for the mic, sound only comes though the left channel for listeners. I know WHY this happens, and that Windows has a simple work-around to drive mono sound through both output channels. I cannot find a way to do this on my MacBook Air. Any ideas? Am I posting this on the correct group in this forum? Thanks!