--- wrapper/asteriskaudio.cxx.orig	2008-03-20 17:26:57.000000000 +0200
+++ wrapper/asteriskaudio.cxx	2008-03-20 17:30:38.000000000 +0200
@@ -29,6 +29,7 @@
  */
 
 #include <ptlib.h>
+#include <ptlib/sound.h>
 #include <sys/time.h>
 #include <rtp.h>