Giving it a shot. I have a rare rehearsal on Thursday night and we are going to be diaing in our IEM mixes. I figure now is as good a time as any to work on incorporating some light, tasteful backing tracks. I'm planning on using my iPhone 6 using the BackTrax app to start. I've tested my tracks (music on L, click on R) coming into the mixer and then only sending the click to everyone's aux mix (no mains) and of course sending the music to auxes and main mix. There was bleed through using the iPhone but NOT using the iPad when connected into my Mackie DL1608. Luckily I found a quick blurb that mentioned "sound check" enabled on the iPhone can cause bleed, so I disabled that on the iPhone and voila works and sounds great <just a PSA if anyone is having similar issues> It would be sweet to just use the iPad playback feature in the Mackie DL1608 but I would have to walk back to the mixer to hit PLAY and that could be dicey. Question is now that I'm heading down this road... should I track everything? or at least start bringing in CLICK for everything? And how to handle a gig where we are not doing sound? I had another thread about a splitter snake and general consensus was either forget it and don't use IEMS or try and trust the sound guy to provide IEM mix. We all use the PSM200 which allows us to bring in a second channel (in my case guitar) so I could have more me on the fly if needed). My "failsafe" is to have stripped versions of the songs we can play without tracks or possibly even a completely separate set list. So in general, what is your process live?