./xine-lib/src/input/libdvdnav. This part of the tree should never be modified directly. The entire libdvdnav directory is periodically updated from dvd.sf.net libdvdnav cvs. If any developers notice a bug in this code, please report it to the dvd-devel@lists.sourceforge.net mailing list. If any developers have any patches for this code, please report it to the dvd-devel@lists.sourceforge.net mailing list. The dvd.sf.net libdvdnav cvs will then be updated, and xine-lib will receive the update when the next periodic update from dvd.sf.net libdvdnav cvs happens. If one uses the following command in ./xine-lib directory, One can bypass this code, and force xine-lib to use the dvd.sf.net libdvdnav cvs code directly, thus simplifying the developers testing of bug fixes/new features in libdvdnav. ./configure --with-external-dvdnav Thank you for your understanding.