I have just been asked to DJ a silent Disco. Client is renting all the headphones. I have not done this type of event before. I have a Prime 4…I know I can stream a seperate playlist from the zone. Can I DJ live from the other two channels and send that signal out of the Master? Seems like I could. But, that would only be two seperate playlists. How could I get a 3rd out of the board…or would that not be possible. Just looking for some thoughts or experiences relative to this. Thanks 
Whats in a name when you say silent disco? It doesn’t inherently mean every client in the audience needs a different playlist, although that can be a cool concept too.
If, as the promotor of the event, you do want to have more than one program streaming through the headphones, personally I would book more than one DJ. If you just want to do playlists, Spotify can do this too. It would be way cooler to have 2 or 3 DJs, each playing their own set, having to guess who is listening and reacting to your set. It would provide for a special experience for sure, for the crowd, and for the DJs 
Maybe you can pitch the idea. If not, just use iTunes or Spotify on a spare laptop, or even rent an extra Prime 4… But personally, as a DJ, I have no interest in curating one or 2 extra playlists on top of my DJ set, and would say to the promotor that I can deliver 1 program, not more… Really, I can’t think deephouse and nillies pop at the same time…
Yeah, I was kind of blind sided by the silent disco thing. The company already booked me for their main disco party…using my traditional speaker system. Then, their main sponsor rented the equipment for the silent disco. Neither the company nor the sponsor understand what is involved with the silent disco and they are looking for me to “make it happen”. So, I am having to explain that there will be significant costs associated with extra DJ’s for the silents disco. They are thinking the Silent Disco is easy and not a lot of work…LOL. But they are really clueless. I am not inclined to bring in additional DJ’s and I am pretty confident they will not pay the additional money for the additional DJ’s. I am inclined to bring in one DJ and create the playlists. Maybe he could play one of the streams “live” and the other streams could have pre-mixed playlists. Either way, I don’t think it is possible for my Prime Go to output multiple (different) streams. And I will be using my Prime 4 for the main party.
Well, I think, be it DJing or any other line of work, it is your task to inform them about what is possible or not. And if necessary walk away. My daytime job is construction. If I would build anything my clients ask me to build, I would have been bankrupt a long time ago due to damage claims…
But I totally understand your position Good luck!