--- ./options.h.orig 2008-03-02 22:44:57.000000000 +0800 +++ ./options.h 2008-03-02 22:45:04.000000000 +0800 @@ -48,6 +48,7 @@ #define _CPhone_OPTIONS_H #include <ptlib.h> +#include <ptlib/sound.h> class MainUserInterface;