--- config.default.orig	2011-11-10 21:48:01.000000000 +0100
+++ config.default	2011-11-10 21:51:58.383221979 +0100
@@ -6,23 +6,23 @@
 #BACKEND = allegro
 #BACKEND = gdi
 #BACKEND = sdl
-#BACKEND = mixer_sdl
+BACKEND = mixer_sdl
 #BACKEND = posix
 
 #COLOUR_DEPTH = 0
-#COLOUR_DEPTH = 16
+COLOUR_DEPTH = 16
 
 #OSTYPE = amiga
 #OSTYPE = beos
 #OSTYPE = cygwin
 #OSTYPE = freebsd
 #OSTYPE = haiku
-#OSTYPE = linux
+OSTYPE = linux
 #OSTYPE = mingw
 #OSTYPE = mac
 
 #DEBUG = 3    # Level 1-3, higher number means more debug-friendly, see Makefile
-#OPTIMISE = 1 # Add umpteen optimisation flags
+OPTIMISE = 1 # Add umpteen optimisation flags
 #PROFILE = 1  # Enable profiling
 #PROFILE = 2  # Enable profiling with optimisation flags, can be used with `OPTIMISE = 1'
 
@@ -34,9 +34,9 @@
 # Define these as empty strings, if you don't have the respective config program
 #ALLEGRO_CONFIG = allegro-config
 #PNG_CONFIG     = pkg-config libpng
-#SDL_CONFIG     = sdl-config
+SDL_CONFIG     = sdl-config
 
-#VERBOSE = 1
+VERBOSE = 1
 
 # The following useful conditional compilation flags exist
 #
@@ -65,6 +65,9 @@
 #
 # In order to use the flags, add a line like this: (-Dxxx)
 # FLAGS = -DUSE_C
+ifeq ($(shell uname -m),x86_64)
+  FLAGS += -DUSE_C
+endif
 
 # Output directories:
 #