add link to irix package

doc/html/download.html

@@ -91,6 +91,9 @@
 	<P>
 		Mac OS X users, be sure to check out <A HREF="http://www.danrules.com/macflac/">MacFLAC</A>, a FLAC distribution specifically for OS X, including a .pkg installer and applescript droplets.  Or, if you use <A HREF="http://fink.sourceforge.net/">Fink</A>, you can try the <A HREF="http://fink.sourceforge.net/pdb/package.php/flac">FLAC Fink package</A>.
 	</P>
+	<P>
+		IRIX users can find FLAC packages <A HREF="http://freeware.sgi.com/">here</A>.
+	</P>
 	<P>
 		Amiga users can find a pre-compiled FLAC package <A HREF="http://amiga.sourceforge.net/">here</A>.
 	</P>