I have a question. I'm just now trying to set up a talkback situation, have done so using suggestions from here, using agregate device, and all seems to be working well. But it now seems that my talkback channel always has to be in record mode in order for my talent to hear it. In one post, the person says that as long as the input 'i' button is selected, they will hear talkback. But either the record button has to be selected, or the track has to be selected, as that initiates the outlined R. Either way, the MUTE button doesn't seem to have any bearing on whether or not the track is engaged. What am I missing here?