it covers a technique on how to solve tileable sculpts.
the technique itself applies not only to mudbox but also to zbrush.
bit long with 20 min. and big with 90 mb..
especially to beginners, this one can be useful.
you'll find it here (http://saschahenrichs.blogspot.com/2009/11/here-another-tutorial-concerning.html)
to the example files (http://saschahenrichs.de/vids/ressources_mudbox3.rar)