diff -Nru oms/src/plugin/input/input_udf.c omsfly/src/plugin/input/input_udf.c
--- oms/src/plugin/input/input_udf.c	Mon Jun 18 19:26:29 2001
+++ omsfly/src/plugin/input/input_udf.c	Mon Jun 18 19:36:14 2001
@@ -64,6 +64,7 @@
 extern int CSSAuthTitle (int fd, char *key_title, int lba);
 extern int CSSGetASF (int fd);
 extern int CSSDecryptTitleKey (char *key_title, char *key_disc);
+extern int CSSDecryptTitleKey2 ( int i_fd, char * titlekey, off_t i_title_pos);
 extern void CSSDescramble (u_char *sec, u_char *key);
 #endif
 
@@ -131,7 +132,7 @@
 	if (CSSAuthTitle (priv.fd, priv.key_title, priv.pos) < 0)
 		LOG (LOG_ERROR, "Authenticate title (%s)", strerror (errno));
 
-	if (CSSDecryptTitleKey (priv.key_title, priv.key_disc) < 0)
+	if (CSSDecryptTitleKey2 (priv.fd, priv.key_title, priv.pos * (off_t) DVD_VIDEO_LB_LEN ) < 0)
 		LOG (LOG_ERROR, "Decrypting title (%s)", strerror (errno));
 
 	return 0;