it seems that i have a problem with built in realtek soundcard.
since my built in soundcard has 8 channels, there is a possibility to manipulate these channels. so when i installed realtek drivers, i noticed that there is no asio support. to solve this problem, i installed ASIO4ALL from http://www.asio4all.com/.
i went to live preferences and chosen asio, then asio4all v2 and in the output config section i enabled 1/2 3/4 5/6 7/8 (stereo) channels.
next thing i wanted to do was cueing, so i set cue out to 3/4 and master out 1/2. and here comes the problem: i hear both tracks at the same time. i have no idea what is wrong since both tracks are set to different channels.
here is the screenshot for better understanding of my problem

i hope you, guys, could help me.
thanks in advance!