I need to have two people on a phone call and record all the three voices -- mine and the voices of each of the other two guests -- on separate tracks. I could use the plain old telephone or Skype to make the call, whatever you say works better. But my end goal is to have each voice on a separate track. Or at the very least, all voices on (n - 1) tracks where n is the number of people on the call. In other words, in the worst case (n - 1) scenario, I could have my own voice be interlaced with another guests voice in one track.
What setup would give me the result I need? What all equipment and software would I need? Also, what is the best sound mixer for a home studio use?
How will the sound output from a given PC that the call is on, go to the sound mixer? What interface -- USB/Firewire do sound mixers use?
Sorry, I am a total newbie as far as sound mixing is concerned.