dj mixer-mbox pro 2-ableton-no stereo can you please help

[selimsivad]

hey there,i just bought a dj vestax samouri dj mixer, but my problem is: when i have
line out of the left/right channel of the mixer to the line in left and right on the inbox, when i open ableton and set the audio track for line in 3/4 on the track, it only goes to one channel! on top of that, i've selected all the input output settings available in order to trouble shoot this problem but no luck. i'd feel lucky if somebody knew the solution, thanks for your time.