There are three examples:
This example reads the information of a DVD and displays them in a rather confusing manner. The purpose of this example is to demonstrate how to traverse through the DVD structure.
This example reads structure of a DVD, tries to look it up on the server and displays the information (or simply that it is not found). The purpose of this example is to demonstrate how to get the information from the server and then traverse through the DVD structure to display it. There is also an option to write the data retrieved into an xml file that can be edited and submitted to the server (using the dvdsubmit example program).
This example reads the information of a DVD from an xml file, and submits it to the server. The purpose of this example is to demonstrate how to submit information to the server.
Examples are available in both C and C++.
If you want a more clearly arranged look, better check out the Qt GUI example instead, see the Qt directory.
This is an example written in C++ using the Qt library. It has a GUI and presents a much more clearly arranged look at the DVD structures.
If you have Qt Creator, try it, it may help to understand DVDs a lot. If not, get it (http://qt-project.org/downloads), it's multi platform and definetly worth a try.
These are part of the package and can be found under downloads.