I am appalled at the lack of quality and ease of use with the updated Sonos App.  The U/I is awful.  Definitely a step back.  Cannot add my music library on my MAC.  Why did you change an app that was working fine.  Was this ever tested?  Did you do any Beta testing.  This is the worst implementation of any software updates I have ever used.  Your Quality Assurance department should be ashamed of themselves for releasing this garbage.