Add the SDL audio driver for fallback

stepmania/src/Makefile.am

@@ -164,6 +164,10 @@ Sound_Null = \
 	arch/Sound/RageSoundDriver_Null.cpp \
 	arch/Sound/RageSoundDriver_Null.h
 
+Sound_SDL = \
+    arch/Sound/RageSoundDriver_SDL.cpp \
+    arch/Sound/RageSoundDriver_SDL.h
+
 Sound = $(Sound_Null)
 if ALSA
 Sound += $(Sound_ALSA9)
@@ -171,6 +175,7 @@ endif
 if HAVE_OSS
 Sound += $(Sound_OSS)
 endif
+Sound += $(Sound_SDL)
 
 stepmania_SOURCES = $(Rage) $(DataStructures) $(FileTypes) $(StepMania) $(Transitions) \
 		    $(Actors) $(ActorsInMenus) $(ActorsInGameplay) $(Screens) $(GlobalSingletons) \

stepmania/src/arch/arch_linux.h

@@ -5,8 +5,14 @@
 #include "Sound/RageSoundDriver_ALSA9.h"
 /* #endif HAS_ALSA9 */
 #include "Sound/RageSoundDriver_OSS.h"
-
 #endif
+/* 
+ * Sometimes Alsa and OSS fail to load, so
+ * SDL should be a fallback, even though it
+ * doesn't work perfectly.
+ */
+#include "SDL.h"
+#include "Sound/RageSoundDriver_SDL.h"
 
 /*
  * Copyright (c) 2002 by the person(s) listed below.  All rights reserved.