Hey, i use crossDJ for teaching ballroom dances. It is one of very few Android Apps that can do timestretching. Everything works fine, but i wonder if it was possible not having to hardwire the phone to the rack, but either play from CrossDJ to a DLNA, Airplay, Chromecast whatever device (over Wifi, _not_ bluetooth) or to wirelessly remote control the android app. I could stay on the floor instead of running to the deck at least every 3 Minutes.
I tried to use a DLNA sink like AirAudio. AirAudio 'redirects' any audio output to a DLNA, Airplay or Chromecast server. Works great with many audio players, except CrossDJ
(i don't blame Mixvibes for that, it's bending the standards).