Wynn, Just used my Airport Express with iOS7 last Thursday and didn't have one disconnect. As far as the freq. questions, you will get better range using 2.4GHz but also more interference. I would recommend 5.0 and that's what I use. Another reason to use 5.0 is if you also use cordless mic's which use the 2.4 GHz range as well. I don't know if your question regarding break music has been answered, but I use a mini to RCA y-cable (Monster sells them). On the RCA side, I use a RCA female to 1/4" male adapter and plug into CH 15/16. I then use an AirPlay recognized app (i.e. iTunes or LouderLogic) to control the music from my remote iPad. Once Mackie releases 2.0, you will be able to link CH 15/16 and control via one fader.