You can get it from http://kcdlabel.sourceforge.net
As you might expect you need KDE !
I've created 3 branches :
first for KDE 1, obsolete now and not maintained anymore;
second for KDE 2, last version is 2.7;
port to KDE 3, same 2.7, but ported to KDE 3, made by Dag Nygren;
You need QT also of course ! But you should already have it with KDE !
In order to compile and install KCDLabel on your system, type the following in the base directory of the KCDLabel distribution:
% ./configure
% make
% make install
Since KCDLabel uses autoconf you should have not trouble compiling it. Should you run into problems please report them to the the author at Pascal 'PeP' Panneels <pepouille@skynet.be>