Is there a way to record four channels simultaneously assuming you have four separate microphones? What hardware would work best for this? Four USB microphones?
See http://manual.audacityteam.org/o/man/faq_recording.html#twomics (you may be able to record four USB microphones that way, with the stated limitation about “drift” and possibly even with a risk of dropouts).
See also http://manual.audacityteam.org/o/man/faq_recording.html#multi .
Gale