Index: corsixth-0.0.0-beta5/CorsixTH/Src/sdl_audio.cpp
===================================================================
--- corsixth-0.0.0-beta5.orig/CorsixTH/Src/sdl_audio.cpp	2010-05-22 03:06:30.000000000 +0200
+++ corsixth-0.0.0-beta5/CorsixTH/Src/sdl_audio.cpp	2011-01-17 01:35:25.000000000 +0100
@@ -25,6 +25,7 @@
 #ifdef CORSIX_TH_USE_SDL_MIXER
 #include "th_lua.h"
 #include "xmi2mid.h"
+#define USE_RWOPS 1
 #include <SDL_mixer.h>
 #ifdef _MSC_VER
 #pragma comment(lib, "SDL_mixer")
