We all need to be limiting our clients to what actually works. If they want access to some music service that is a pain in the ass, then they need to learn how to use Airplay and you put in a rock solid wireless network. If they really love Spotify, that's how it has to be. Don't want it to glitch when your phone roams around the house in your pocket? Here is your dedicated iPad in a mount that doesn't let it move around. It's not going to be my fault that the streaming audio services don't care to integrate properly into big homes with multizone audio systems.