I am getting our Church setup to do Facebook live, using the sound from our StudioLive 24.4.2. I've seen questions on this issue with suggestions using stereo XLR/TRS outs, the XLR mono out, the CR out and/or a Aux out. However, I am basically using all of those outs in other ways. I am wondering if the tape out could be used? Is the tape out basically the main mix (post- everything)? Is there a way to adjust the volume of the tape out (I see it is set a +18 dB)?