Check out the current issue of Make Magazine for a feature on Author & Punisher as well as a DIY/How-to on the Headgear octo-microphone controller.
Digital Download
Feature: http://www.make-digital.com/make/vol22/?folio=30#pg32
Headgear DIY: http://www.make-digital.com/make/vol22?pg=120#pg120
Or purchase in store.