Index: configure.in.in
===================================================================
--- configure.in.in	(revision 25726)
+++ configure.in.in	(working copy)
@@ -33,7 +33,7 @@
 
 if test x"$with_sound" != x"alsa" -a x"$with_sound" != x"oss" -a x"$with_sound" != x"sun" -a x"$with_sound" != x"sgi"; then
   if test x`uname -s` != x"SunOS"; then
-    if test x`uname -s` != x"IRIX"; then
+    if test x`uname -s` != x"IRIX" -o != x"IRIX64"; then
       with_sound=oss
     else
       with_sound=sgi