Reply to Audio 2 DJ problems

Sorry if this is the wrong section to post in
I recently bought a NI audio 2 dj external card, but as soon as i set traktor to route the monitor through the second channel the master gets alot of static and distortion. as well the audio when played from itunes using the audio 2 dj driver/sound card, and even youtube, will occasionally (maybe once every two minutes) pause for maybe a second before returning to audio. should i send it back? reinstall drivers? could it be the latency not being set high enough?
any help is appreciated!
thanks