Soldier Of Fortune 2 problem

Hej.
Når jeg joiner en server, eller for den sags skyld bare prøver at spille på en server i spillet, så går den ud af spillet, og viser den fejlmeddelelse:

WARNING: could not find sound/npc/col8/blakely/sniper - using default
WARNING: could not find sound/npc/col8/blakely/checkfire - using default
WARNING: could not find sound/npc/col8/blakely/firehole - using default
WARNING: could not find sound/npc/col8/blakely/grenade - using default
WARNING: could not find sound/player/steps/water/water_step0 - using default
WARNING: could not find sound/player/steps/water/water_step1 - using default
WARNING: could not find sound/player/steps/water/water_wade0 - using default
WARNING: could not find sound/player/steps/water/water_wade1 - using default
WARNING: could not find sound/player/jumps/water_jump - using default
----- CL_Shutdown -----
RE_Shutdown( 1 )
R_Terrain: Shutting down RENDERER terrain.....
Shutting down OpenGL subsystem
...wglMakeCurrent( NULL, NULL ): success
...deleting GL context: success
...releasing DC: success
...destroying window
...resetting display
...shutting down QGL
...unloading OpenGL DLL
-----------------------
Shutting down cmShaderTable .....
ERROR: Couldn't load ambient sound sets from sound/sound.txt

------------- Input Shutdown -------------
------------------------------------------

- Hvad kan jeg gøre?

sound.txt findes heller ikke på min vens computer, og der kører det fint uden.