Dedicated Server and Client on one PC
Not recommended I know but I've had the dedicated server and client operating on the same PC.
I used to do this in Halo by putting my client on a different port to my server but in SWBF I can't do this. What I do instead is start my client, ALT + ESCAPE, run the dedicated server, and then go back into my client to play. I wouldn't recommend this if your PC isn't running on a reasonably good spec but I've had it going with 18 people entering the game without any issues.