OpenAL is a standard which can have multiple implementations.
Your first link goes to OpenAL Soft, which is a cross platform software implementation.
The second goes to the Creative Labs implementation, which basically requires your users to have a nice Creative Labs soundcard to have things work correctly.
I use OpenALSoft and don't bother with the second.
Regarding HRTF: In OpenAL Soft version 1.15.1 the HRTF files were included within the dll.
In version 1.16 they are separate files which you found.
Here's what you have to do to get HRTF working on an end user's machine in 1.16:
1. Use your run window to open the %AppData% folder and create a file called alsoft.ini.
2. Put this line in that file:
hrtf = true
3. In the same %AppData% folder create the folders openal/hrtf.
4. Copy the 2 .mhr files into %AppData%/openal/hrtf.
Now OpenAL Soft will find the HRTF files and use HRTF.
Obviously this is a bit of a pain, but this is how it is for now.
The OpenAL Soft maintainer has written some extensions to make configuring HRTF a little nicer, but those won't be out until the next version.
If my instructions were confusing you can download this zip file that contains the files / folders you need to put in %AppData%:
http://BlindAudioGames.com/downloads/Pu … ppData.zip
Hope that helps.
~ Ian Reed
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