A problem with absence of voices, no voices in game

[Liarmann]

Hello!
I am from Russia, my English is poor, sorry.

I have a problem with english version of the game Amnesia.
In game all sounds are present except for voices.
No voices in game (in game process, in diaries, in notes, nowhere).
In a folder with the game all voices present in .ogg. All voices/sounds/monologs/etc.
They are correctly opened by music player and I can listen them.
Developers comments in game present and I can listen them in game.

I reached to a water invisible monster and Daniel did not say by voice nothing for all the time of game.

What is the way to decide a problem?

My config is:
Intel Core 2 Quad Q9400
ASUS P5E Motherboard
8Gb DDR2 Memory
HIS Radeon HD4850 512Mb
Audio Card is M-Audio Revolution 5.1

OS: Windows7 x64.