To expand a bit on what Mac posted, MIDI isn't actually audio information, but instructions to a musical instrument, along the lines of "turn a note on", "turn a note off" and "change the instrument being played". That's great for some applications (like BiaB) where you might want to change instruments, or edit the performance afterwards.

For your friend, it's probably not so useful, especially since (as noted) Audacity doesn't record MIDI.

According to the user manual, there are several outputs in the CP33:

  • There's the MIDI cable, which you've already discovered doesn't send audio information.
  • There's a USB port, which also sends only MIDI information.
  • There's a headphone jack that sends audio signals.
  • There's a pair speaker jacks that sends audio signals. One is labeled "OUTPUT L/MONO" and the other "R".

So you can hook up an stereo audio cable from the headphone jack to the computer's soundcard line input jack, or a mono cable from the "OUTPUT L/MONO" jack. Either of these should work.

The computer's line in should be color coded light blue, or have a symbol of a microphone next to it.

-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?