for those who don't know, cAudio is a great OpenAL wrapper with an api that's similar to irrlicht's. adding sound to your irr projects couldn't be much easier.
pity that the project's been neglected over the years. i have forked it recently and equipped it with a CMake configuration to be easily included in your projects. i have confirmed it builds on linux and windows, if someone wants to help supporting macs, that'd be great.
and for those who still know the pain: it builds on win x64 out of the box

find it in its repo here
let me know if you encounter any issues. and too, if it's of use to you.
cheers,
p.