Reply to Recording audio volume is too low.

Hey all, so I have 2 cdj's and a mixer which is hooked up to KRK 8's and the 10s sub, the mixer is a DJM 200 and I have the master 2 going to an external USB sound card, here is the thing, it seems like my master level is extremely low, I have to crank up the volume so much that I would have to blow up my room to get a proper signal to send to my laptop for recording. The signals coming from the CDJ's are fine, but the master on my mixer is just barely flashing 2 green led's on the meter (whatever it's called...) Right now I have the line in dialed up all the way on the sound card and the signal is just barely coming in, and there is an annoying white noise underneath it. Does anyone know what could be the problem here? I'm using an audio track in ableton to record.