Fix missing string formatting argument.
diff --git a/Lib/plat-irix6/cdplayer.py b/Lib/plat-irix6/cdplayer.py
index 0f7983b..6529de2 100644
--- a/Lib/plat-irix6/cdplayer.py
+++ b/Lib/plat-irix6/cdplayer.py
@@ -85,7 +85,7 @@
         new.write(self.id + '.title:\t' + self.title + '\n')
         new.write(self.id + '.artist:\t' + self.artist + '\n')
         for i in range(1, len(self.track)):
-            new.write('%s.track.%r:\t%s\n' % (i, track))
+            new.write('%s.track.%r:\t%s\n' % (self.id, i, track))
         old.close()
         new.close()
         posix.rename(filename + '.new', filename)