Hi!
I've got Vista64, ATI x1900 (v7.4), Audigy 2 (v.2.12.0002) and Penumbra:Overtune 
 
I've got also graphic corruption, missing textures, objects etc. Still waiting for patch, new drivers or manna from heaven like others.
Your OpenAL distributive let me fix only menu freezing when out from game (with supplied from Creative latest drivers was glitch and BSOD).
But also, studing hpl.log, I noticed some strange lines and decide to ask you what it means.
----
-------- 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: 1024 x 768 - 32 bpp
 Init Glee...OK
 Setting up OpenGL
  Max texture image units: 16
  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: 0
  NV Register Combiners Stages: 11
  ATI Fragment Shader: 1
 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 1024.000000 : 768.000000
 Creating programs
  RendererPostEffects created
 Adding engine materials
--------------------------------------------------------
Initializing Sound Module
--------------------------------------------------------
 Initializing OpenAL.
  Trying to open hardware device... Success!
  Device name: SB Audigy 2 Audio [CC00]
  OpenAL Version Supported: 1.1
  Number of channels: 32
--------------------------------------------------------
Initializing Game Module
--------------------------------------------------------
 Adding engine updates
 Initializing script functions
--------------------------------------------------------
User Initialization
--------------------------------------------------------
Trying to load vertex program!
Success!
--------------------------------------------------------
Game Running
--------------------------------------------------------
Loading collada for 'maps/level00_01_boat_cabin.dae' took: 379 ms
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Bone 'joint1' is not attached to skin!
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry for joint child '' is missing! Might be connected to bone.
WARNING: Geometry  joint parten '' is missing! Might be connected to bone.
ERROR: Child body 'joint1' for joint 'sjoint2' in mesh 'boat_dynamicparaffin.dae' does not exist!
ERROR: Cannot find sub entity 'parrafinlight_joint1' in mesh 'boat_dynamicparaffin.dae'
Start Num Of: 118
Start Num Of: 1
Loading map 'level00_01_boat_cabin.dae' took: 6867 ms
--------------------------------------------------------
Statistics
--------------------------------------------------------
 Medium framerate: 53.709151
--------------------------------------------------------
User Exit
--------------------------------------------------------
  Saving to config
  Saving keys
  Saving to config
  Saving keys
 Exit Player
 Exit Button Handler
 Exit Map Handler
 Exit Game Message Handler
 Exit Radio Handler
 Exit Inventory
 Exit Fade Handler
 Exit Save Handler
 Exit Trigger Handler
 Exit Attack Handler
 Exit Notebook
 Exit Numerical panel
 Exit Intro story
 Exit Death menu
 Exit Graphics helper
 Exit Main menu
 Exit Player hands
 Exit Music handler
 Exit Map Load Text
 Exit PreMenu
 Exit Credits
 Exit Demo end text
 Saving config
 Exit Effect Handler
 Exit Game
--------------------------------------------------------
Exiting Scene Module
--------------------------------------------------------
--------------------------------------------------------
Exiting Input Module
--------------------------------------------------------
--------------------------------------------------------
Exiting Sound Module
--------------------------------------------------------
--------------------------------------------------------
Exiting Graphics Module
--------------------------------------------------------
--------------------------------------------------------
Exiting Resources Module
--------------------------------------------------------
 Done with tilesets
 Done with fonts
 Done with scripts
 Done with particles
 Done with sounds
 Done with meshes
 Done with materials
 Done with Gpu programs
 Done with images
 Destroyed all textures
 Done with sound entities
 Done with animations
 All resources deleted
--------------------------------------------------------
Exiting Physics Module
--------------------------------------------------------
--------------------------------------------------------
Exiting System Module
--------------------------------------------------------
--------------------------------------------------------
- Deleting lowlevel stuff.
  Physics
  Sound
  Input
  Resources
  System
  Graphics
HPL Exit was successful!
 Saving last config
Deleting ATI shader to 0
----
Is it problem with drivers or game?