No surround 5.1 sound in demo

[jens]

Copy & Paste from the Steam forum

We have removed the hardware options from the game as the sound can be quite unpredictable and cause bugs, everything from crashes to sounds simply not playing. However you can enable hardware sounds be editing the main_settings.cfg file found in My Documents/Amnesia/

First you open the hpl.log file that you also find in My Documents/Amnesia/
look for the section "Initializing Sound Module" and there is a list of OpenAL devices. See what number the hardware device has in the list then take that number, and in the main_settings.cfg file on the row starting <Sound change the number for Device="" accordingly.