I was having problems like

Originally posted by ProgramerGamer:

Certain audio lines do not play or have has a weird effect. Example: Hinoa does not say a word when I start interaction but does when I leave, and Yomogi has the same problem. Tried both English and Japanese voice lines. Audio also cuts out on certain actions, using a wirebug and getting buffs from the fish in frozen wastelands.

I was trying different things and I turned on 3D audio, and everything started working. Even if you don't have something that works with 3D audio (maybe), turn this on if off. Maybe turn it off if you had it on prior to this and it might work.