--- spcxmms-0.2.1/libspc/port.h.orig	2005-05-01 09:15:50.000000000 -0400
+++ spcxmms-0.2.1/libspc/port.h	2005-05-01 09:14:04.000000000 -0400
@@ -147,7 +147,7 @@
 #endif
 
 #if defined(__i386__) || defined(__i486__) || defined(__i586__) || \
-    defined(__WIN32) || defined(__alpha__)
+    defined(__WIN32) || defined(__alpha__) || defined(__x86_64__)
 #define LSB_FIRST
 #define FAST_LSB_WORD_ACCESS
 #else