Reply to HELP! HELP! HELP! Audio 4 DJ

Hi all, i am sorry my English, i am russian, but i need HELP!
Today i am buying Audio 4 dj and powerd speakers.
1)I connect audio4 (connect speakers RSA cabels CH.A OUT 1/2) with my Mac BookPro 10.5.8
2)Instal drivers audio4dj, instal settings tool
3)I am entered in system preferences -> sound -> output instal audio4dj -> input instal audio4dj (system preferences " selected devices has not output control / has not input control" sys pref - shut down
4) For testing my system i am runing itunes but from 1 minutes itunes shut down too
5) I am running applic -> utilites -> midi setup -> audio devices (in, out audio4dj) in midi devices i have IAC Driver (it's normal?)
6) I am running Traktor Pro 1.2.4 select audio 4 dj (bad quality) in headphones bad noise and...traktor shut down!
I NEED HELP! Give me instruction PLEASE! Or link with information for solved problem

Thank you!