.TOX file that helps create zone-based audio triggering, fading, optimization, and mixing. Used in a series of tutorials by Blake Marques Carrington called "TD as Game Engine", which dive into a very large project (over 6000 operators), in which TouchDesigner is used to create a first-person game-like experience for installation and performance contexts.
A tutorial explaining the contents of this .TOX can be found here: "TD as Game Engine, Part 5: Audio"