Welcome to Librarium Online!
yeah, uh where can you get it? do you have to pay for it or is it free? Any help would be appreciated.
You can find it here:
Lone Wolf Development
The trial version is free but won't let you save rosters. You have to buy the software in order to do that. IMO, the software is well worth the money if you like to play a lot (you can use it for all sorts of games including WH-fantasy and 40k) and like to tweak your army lists.