diff -uNr audacious-1.5.1-orig/src/audacious/util.h audacious-1.5.1/src/audacious/util.h
--- audacious-1.5.1-orig/src/audacious/util.h	2008-05-24 00:00:34.000000000 +0200
+++ audacious-1.5.1/src/audacious/util.h	2008-10-13 21:06:40.394637479 +0200
@@ -38,7 +38,9 @@
 G_BEGIN_DECLS
 
 #include "audacious/plugin.h"
+#ifdef _AUDACIOUS_CORE
 #include "libSAD/libSAD.h"
+#endif
 
 #define SWAP(a, b)      { a^=b; b^=a; a^=b; }
 
@@ -91,7 +93,9 @@
 
 gchar *construct_uri(gchar *string, const gchar *playlist_name);
 
+#ifdef _AUDACIOUS_CORE
 SAD_sample_format sadfmt_from_afmt(AFormat fmt);
+#endif
 
 /* minimizes number of realloc's */
 gpointer smart_realloc(gpointer ptr, gsize *size);