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I have one audio output and two audio inputs on my computer. But, I have one microphone, stereo reproductors and headphones. In windows Realtek driver, I could simple change the audio input to output, now I'm using Ubuntu 12.04 and PulseAudio. Is there any option to change the input to output and conversely? Thanks

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use this link it will solve your problem [enter link description here][1] [1]:… – Emadeldeen Abd-Allah Abdel-Hal Jul 10 '13 at 7:42

I think you can do that by going to : system settings -> sound. and change the default hardware used in input or output.

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