I think this is going to help you.
http://www.elitepvpers.com/forum/flyff-pserver-guides-releases/545878-tut-configuration-v15-official-files-source.html
Sedrika is explaining, how to connect later on.
Here is a V19 Source.
http://www.elitepvpers.com/forum/flyff-pserver-guides-releases/2258816-my-v19-source-download.html
In fact you thought someone is going to give you a Client which is ready to start, I guess, you are wrong here.
People will help you to make your "own" Client but without a payment, no one would release a "ready-to-start" Server. This would be to much work ~ not worth it.
Regards,
~Hömer~