--- a/src/preferences.h
+++ b/src/preferences.h
@@ -85,6 +85,7 @@
 
 gboolean preferences_init();
 void preferences_finalise();
+int preferences_get_default_backend();
 
 gchar *preferences_get_copy_data_cd_image();
 gchar *preferences_get_copy_dvd_image();
--- a/src/backend.h
+++ b/src/backend.h
@@ -30,6 +30,7 @@
 
  
 gboolean backend_is_backend_supported(enum backend b);
+gboolean backend_does_prog_exist(gchar* program);
 
 
 #endif /* _BACKEND_H_ */
--- a/src/gnomebaker.c
+++ b/src/gnomebaker.c
@@ -32,6 +32,7 @@
 #include "splashdlg.h"
 #include "gbcommon.h"
 #include <libgnomevfs/gnome-vfs-mime-utils.h>
+#include <libgnomevfs/gnome-vfs-ops.h>
 #include <gst/gst.h>
 #include "media.h"
 #include "dataproject.h"