@vetsin, either you lack OGG support, or the game can't write into its directory. If permissions are the problem (and they shouldn't be if you installed the DEB), you'll need to chown the game directory, so it can write into it. Sound requires some temporary files written there. Also, your setting probably aren't being saved this way. Or, more probably, you lack OGG decoder, so install ogg-support with sudo apt-get install ogg-support libvorbisidec1