Over the course of playing I've started to get annoyed by the voice I selected for my main character, and I've been trying to find a way to change the voice to another of the ones included. I've found forums discussing how to add in voice files from other games, but even in those they've only talked about what files types would be needed, not where in the directories the files are stored and associated with individual save files. If anyone would be able to point me in the right direction, it'd be greatly appreciated.

For the player voices, I'm guessing: Steam\steamapps\common\Pillars of Eternity\PillarsOfEternity_Data\assetbundles\vo

 

...they're not individual .wav/mp3/ogg files, apparently. You'd have to unpack them somehow, of which I know nothing of how to do.