Just one quick question about recording. If i use Yamaha MG12XU mixer as an audio interface, and record sound via few mic inputs at the same time, how does Audiacity record the signal – in one mixed track, or each is seperate?
Assuming are using the USB cable it will be a stereo mixdown.
You can overdub two tracks at a time if you want to layer a mix: http://manual.audacityteam.org/man/faq_recording_how_to_s.html#overdub.
For support with Yamaha products please contact Yamaha.