This Problem was solved in RC 7100, but now in windows 7 professional i have the same problem again.
OpenAl is installed and every OpenAl application is crashing. In some cases (Armed Assault) you can force the application to use DirectSound and then everything is working.
I have an Audigy Se soundcard and perhaps that is not only a windows 7 problem. But also using the original microsoft
driver for my soundcard i have this problem concernig openal.