Commented Issue: Need to record all sounds from sound card. [16353]

Need to record all sounds from sound card. So that mic+output was written to file. Is it possible? Cant find any examples, found just ones that allow to write mic.
Comments: // can't set WaveFormat as WASAPI doesn't support SRC waveIn = new WasapiLoopbackCapture(); from demo?.. But it records just output, no mic sound (