okay, I've a workaround for this :) Thanks to schmatzler from ubuntuusers.de, he found out that you have to delete the OpenAL32.dll in the trackmania nation forever directory and then you have to copy this OpenAL32.dll into the directory http://rapidshare.com/files/108969382/OpenAL32.dll.html for me it works now :) because of my bad english here the steps to go: download this OpenAL32.dll http://rapidshare.com/files/108969382/OpenAL32.dll.html delete the current OpenAL32.dll in the trackmania nations forever directory copy the downloaded OpenAL32.dll into your trackmania nations forever directory