Every action, voice, or even sound effect/ambient noise is echo-y. It wasn't like this a few months ago when I played an earlier version of the game, and I see a few days ago some other users referenced it, too.

http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Number=502331

It happens everywhere, not just in buildings or caves, and even in caves I don't think I would like the effect - is there any sort of way to fix this, by chance?

My sound card is a Xonar Xense PC350, and it has updated drivers, and I'm running Windows 8 64-bit. Thanks!