--- a/src/newgrf_sound.h	Mon Mar 19 12:30:11 2007 +0000
+++ b/src/newgrf_sound.h	Mon Mar 19 12:49:27 2007 +0000
@@ -21,5 +21,6 @@
 FileEntry *GetSound(uint index);
 uint GetNumSounds();
 bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event);
+bool PlayHouseSound(uint16 sound_id, TileIndex tile);
 
 #endif /* NEWGRF_SOUND_H */