new file mode 100644
--- /dev/null
+++ b/include/interface.h
@@ -0,0 +1,21 @@
+/**
+ *  $Id: interface.h 48 2008-01-09 23:59:19Z mbroeker $
+ * $URL: http://localhost/svn/c/VirtualReader/trunk/include/interface.h $
+ */
+
+#ifndef INTERFACE_H
+#define INTERFACE_H
+
+#ifdef PROSER
+#include <proser_interface.h>
+#endif
+
+#ifdef MBROLA
+#include <mbrola_interface.h>
+#endif
+
+#ifdef FESTIVAL
+#include <festival_interface.h>
+#endif
+
+#endif