--- a/rail_gui.c	Thu Nov 04 18:41:39 2004 +0000
+++ b/rail_gui.c	Fri Nov 05 23:12:33 2004 +0000
@@ -5,6 +5,7 @@
 #include "gui.h"
 #include "viewport.h"
 #include "gfx.h"
+#include "sound.h"
 #include "command.h"
 #include "vehicle.h"