Reply to Can't setup my Kontrol S4 properly - Press Play but doesn't play

Hey all,
I borrowed a Kontrol S4 off a mate right before he went overseas for a holiday, and it seems to be only kind of working.

My issue seems to be with the audio and it's 'Flow' (for lack of a better word).

From what i understand the way it should work is as follows....

A) Traktor running on PC
B) Krontrol S4 plugged in via USB.
C) Audio out from S4 into speakers
D) Headphones plugged into S4

...now mine doesn't work like that at all.... PLEASE HELP

A & B i have working. Below are what i believe my problems are but maybe you guys know better.

1) In 'Audio Setup' under 'Audio Device' If i choose one of the two Traktor Options when i hit play it doesn't actually play the song. (i did have this working a second ago and something made it stop again but sound still didn't come out of master out but headphones worked)

2) Can't get headphones to work so i can preview tracks while mixing.

3) Can't get audio out (to go into speakers) on the S4 to work


I believe thats it, it feels like if i can solve the first problem the rest would be solved too.