Fellow poster Electron posted a fix for the described problem, which consists of replacing the shipped OpenAL DLLs
. Since there are a couple of users in that thread, who fixed their sound issues by replacing the OpenAL DLLs, maybe it could be worth looking into shipping these working DLLs/figuring out why the OpenAL shipped by MP4.1 cause problems when detecting audio devices.I'm sure a lot more people have experiences these sound issues and won't actually dig through these forums, so even a stickied thread acknowledging and describing how to fix the problem would be worth a lot.