Reply to HELP! Typhoon vs Traktor pro 2?

Hey, i have a Typhoon on a pc which worked fine with traktor LE, but i got traktor pro 2 and loaded the tsi file and everything, with two decks and two sample decks and now the headphone mix wont work - like ill just hear the tracks that are playing even when the headphone buttons arent on, ive tried playing with the outputs and everything still no go, do i NEED an external soundcard as well as the typhoons one for the headphones?

also i dj'd a friends party the other day and the output was average as it didnt go very loud - could that have anything to do with the typhoon or would that just be the sound system? cos even ipods were louder than the typhoon? SO confuzzled any help would be greatly appreaciated thanks