Audio Recording?

[Wiz]

Yo, I was wondering if anyone can make any recommendations as to what I should use for an audio set-up when it comes to multiple people?

For instance, there's a cool LP'er on youtube named protonjonSA who has posted several vids playing with multiple people (4 players) at the same time (SSBM= Melee), and I was curious as to how he did that? I already left a PM asking him, but apparently, he doesn't respond to any so I'm out of luck.

I know how to do it for single player commentary cuz I've watched already a bunch of tutorials via the dazzle w/ "headphones +mic" and pinnacle studio so yeah. If you could answer that for me that would be great.

The Wiz