The lack of sound is a bug that affects some Windows players as well. You can get around it by opening gstringv2_dir.vpk with GCFScape, then extracting the sound folder to steamapps/common/G String/gstringv2 (and replaci...
Further information after reading the latest patch notes and testing the game on a Windows dual boot: the crashing issue is a known bug that may happen to some computers, it is resolved when adding "+novid" (with the quo...