Might need to extract the zip tar gz file and then using console / terminal become root su and password.
Then it is very simple cd to the ut folder and " ./install.sh " or " ./configure " can not remember.
I used to have issues 2+ years ago with the dvd version or cd version missing the 2nd cd on the dvd or something and there is a code to fix it so it reads from the same disc + subfolders during install.
But this is for the retail version.
Nice ebuild link will have to try it again soon.