Myself and my wife use Oneplus X and have Spotify installed on our computers and phones. Now we've taken advantage of the Family package. This has caused an error that wasn't there before.

Every time spotify is playing on the Denon network receiver and I unlock my phone it'll crash the Denon and will stop any playback on Spotify. Doesn't matter if it's mine or wives, it'll crash every time 100%. So we can't listen to spotify at home any more. 

Also if I uninstall Spotify on my phone the receiver will play without problems. But I also listen to Spotify on the way to work on my phone so I need it both at home and at work. I have tried reinstalling etc. Still a problem and 100% of the time I unlock my phone (or just press the power button to light up screen).