FATAL ERROR: No sound devices available! Check your Open Al installation.

[Argoon]

OpenAll should indeed come with the game, try this fix http://www.frictionalgames.com/forum/thread-4012.html if it does not work then try installing OpenAll from Amnesia the dark descent because the Openall site seams to be down. If all fails perhaps your sound card do not support OpenAll and so you could also try OpenAll sof is a new version of the free openall version that works only with your CPU for sound calculation instead of sound cards.