Use variables from module cd instead of CD.
diff --git a/Demo/sgi/cd/cdaiff.py b/Demo/sgi/cd/cdaiff.py
index e66f6a4..a1b490f 100755
--- a/Demo/sgi/cd/cdaiff.py
+++ b/Demo/sgi/cd/cdaiff.py
@@ -2,7 +2,7 @@
 import readcd
 import aifc
 import AL
-import CD
+import cd
 
 Error = 'cdaiff.Error'
 
@@ -26,7 +26,7 @@
 			r.appendstretch(x[0], x[1])
 		except TypeError:
 			r.appendtrack(x)
-	r.setcallback(CD.AUDIO, writeaudio, a)
+	r.setcallback(cd.audio, writeaudio, a)
 	r.play()
 	a.close()