--- a/src/newgrf_sound.cpp	Wed Jan 10 18:44:52 2007 +0000
+++ b/src/newgrf_sound.cpp	Wed Jan 10 18:56:51 2007 +0000
@@ -63,6 +63,6 @@
 	if (callback == CALLBACK_FAILED) return false;
 	if (callback >= GetNumOriginalSounds()) callback += file->sound_offset - GetNumOriginalSounds();
 
-	if (callback < GetNumSounds()) SndPlayVehicleFx(callback, v);
+	if (callback < GetNumSounds()) SndPlayVehicleFx((SoundFx)callback, v);
 	return true;
 }