Sound Propagation & Additional Audio Format support

I work with a small team. Is there any information on how to do any of this with UE4?
Is there any middleware or plugins that do any of these things already?

A. An example of a sound propagation system implemented into Unreal Engine 3
B. As far as additional audio formats - The engine currently imports PCM Wave, only to compress it to OGG Vorbis (no option to leave it uncompressed wave).
I want to modify this so that the editor can work directly with/import OGG Vorbis (skipping the converting from Wave process) as well as allow the PCM Waves that I do import to remain uncompressed if desired.

Another variation of sound propagation