diff -aurN alsaplayer-0.99.75.orig/interface/gtk/PlaylistWindow.cpp alsaplayer-0.99.75/interface/gtk/PlaylistWindow.cpp
--- alsaplayer-0.99.75.orig/interface/gtk/PlaylistWindow.cpp	2003-04-17 13:45:42.000000000 +0200
+++ alsaplayer-0.99.75/interface/gtk/PlaylistWindow.cpp	2003-07-08 00:09:57.000000000 +0200
@@ -16,6 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */ 
 
+#include <assert.h>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
diff -aurN alsaplayer-0.99.75.orig/interface/gtk/gtk_interface.cpp alsaplayer-0.99.75/interface/gtk/gtk_interface.cpp
--- alsaplayer-0.99.75.orig/interface/gtk/gtk_interface.cpp	2003-04-08 20:30:57.000000000 +0200
+++ alsaplayer-0.99.75/interface/gtk/gtk_interface.cpp	2003-07-08 00:10:14.000000000 +0200
@@ -20,6 +20,7 @@
 #include "config.h"
 #include "prefs.h"
 #include "alsaplayer_error.h"
+#include <assert.h>
 #include <unistd.h>
 #include <sys/types.h>
 //#define NEW_SCALE