When selecting a specific surround sound mode (I haven't been able to see the name of that specific mode), TDM crashes on my system (I'm running Linux Mint 17.1). It didn't even want to start again when I tried to start it immediately after I had made it crash, and I had to delete the file Darkmod.cnf before I could successfully start the game again. When diffing a version of Darkmod.cnf as it looks before I have changed the surround sound setting, and a version as it looks after I have changed the setting so that the game crashes, I see that the only difference is that the variable s_numberOfSpeakers is set to 8 in the version of the file that makes the game crash.