I have done a lot of research, both on Google and StackOverflow. All the answers I found do not work in iOS 7. I started writing fresh app in iOS 7 SDK with Xcode 5.
All
Since I am also interested in finding this solution I will add some more information from my side.
I am experiencing the same problem, but still Apple documentation hasn't changed about remote control event management.
I tried moving some stuff and something interesting happened.
I originally had the remote control event management in my TabBar controller. Now that i moved everything in the player view controller, I can see that I can again control the music playback with my headset but not from the buttons in the new control panel of iOS7 (the one that come from the bottom on the screen).
This is quite weird.
In order to solve the problem, let's try to enrich the thread with our test.