I extracted and went threw some of the .fuz files in the game and I want to use custom voice with my npc on how to use the .fuz files for it. I figured out how to use .wav files but I wan't to use the .fuz files or at the very least the .xwm along with the .lip files.

All I did was have the FUZ file in the \Data\Sound\Voice\.ESP\\filename

Where the filename matched the entry in the "Voice Filename" textbox in the Audio section.

Ok so you have to open the esp then put the .fuz file in there?