This Christmas, I'm considering purchasing a Behringer Xenyx 802 mixer (http/www.amazon.com/Behringer-802-Premium-8-Input-Preamps/dp/B000J5XS3C/ref=sr_1_1?s=musical-instruments&ie=UTF8&qid=1448127692&sr=1-1&keywords=mixer) and an AudioTechnica AT2020 XLR microphone. I already know how to set up the PC to the mixer to get sound in and out of the mixer, but there's one thing I cant seem to find out. A livestreamer I watch mixes all of his audio (game sounds, music, mic) on one mixer. On the stream, you can hear all of this audio. But anytime hes in a TeamSpeak or Skype call, the people on the other end of the call can only hear his microphone, which is still plugged into the mixer, but the stream can hear all of the audio. How does he manage to split just the microphone off to those communication applications, while keeping all audio on the stream?