Segmentation Fault,

[tempest]

Hmm. Weird.
Try running it in GDB and see what you get.

[SELECT ALL] Code:

gdb --args bin_unix/linux_client --home=${HOME}/.assaultcube_v1.1 --init -r -t0

(of course you'll have to cd to AC's main directory first)

But before that, make sure that that stuff is really executed:

[SELECT ALL] Code:

echo >> ~/.assaultcube_v1.1/config/init.cfg "alias openaldevice \"ALSA Software\"; echo works"

then run the game, and now you should find works somewhere in the output (even if it doesn't work :S).