OpenAL sound error when trying to start Penumbra

[cortez]

Hi there!
I'm trying to start Penumbra Overture, but it won't start. I don't have any idea of what to do. I have installed 313.09 Nvidia driver, i have gtx 460. Ubuntu 12.10 64bits with lxde (Lubuntu). Any idea will be helpful.
Here is hpl.log

-------- THE HPL ENGINE LOG ------------

Creating Engine Modules
--------------------------------------------------------
Creating graphics module
Creating system module
Creating resource module
Creating input module
Creating sound module
Creating physics module
Creating ai module
Creating scene module
--------------------------------------------------------

Initializing Resources Module
--------------------------------------------------------
Creating resource managers
Misc Creation
--------------------------------------------------------

Initializing Graphics Module
--------------------------------------------------------
Init low level graphics
Setting video mode: 800 x 600 - 32 bpp
Init Glee...OK
Setting up OpenGL
Max texture image units: 32
Max texture coord units: 8
Two sided stencil: 1
Vertex Buffer Object: 1
Anisotropic filtering: 1
Max Anisotropic degree: 16
Multisampling: 1
Vertex Program: 1
Fragment Program: 1
NV Register Combiners: 1
NV Register Combiners Stages: 8
ATI Fragment Shader: 0
Creating graphic systems
Creating Renderer2D
Renderer2D created
Creating Renderer3D
Load Renderer3D gpu programs:
Extrude
Diffuse
Fog
Creating fog textures: Solid Additive Alpha
init sky box
Renderer3D created
Creating screen buffers size 800.000000 : 600.000000
Creating programs
RendererPostEffects created
Adding engine materials
--------------------------------------------------------

Initializing Sound Module
--------------------------------------------------------
Initializing OpenAL.
Trying to open audio device...

//=====================================================

Hope you can help me to find a solution for this error...