[headset mic -> loudspeaker] and [external mic -> headset headphones]

Hi guys,

I have a max patch of a working xbox360 controller (see below. to try it yourself, attach xbox controller [mac users may have to google drivers, windows users like myself should just update automatically] click menu, select xbox from drop down menu, then poll) that I modded from one I found here somewhere.

I want to attach the xbox headset to the controller to use the mic to speak through a loudspeaker, and the headphones to hear from an external mic somewhere.

My problem is i cannot figure out the route and am also unsure of how to wire it up. Will I need a separate HI, or even 2 exta HI's? One for headset mic, one for external mic?

Looking forward to any comments/advice, thanks for looking at this post!