Ok this is really strange, my mic works through my dj set up but when I am broadcasting on the radio, the booth from my mixer to the line in on my pc my tunes play but the mic does not come through on the soundcard. Im completely baffled any ideas?
The microphone input does not feed the audio interface inputs. The audio interface of the DJX900 was designed for recording of a set. Being that most DJ's will only want to record and playback their music via USB. More so than microphone over dub.
A work around to record a microphone is to purchase a mic pre with line level outputs. You may check the microphone preamplifier page for an entire selection: