Didn't see this posted - after submitting to apple to review so I can send out app to external beta testers, they rejected with the following response:
Your app declares support for audio in the UIBackgroundModes key in your Info.plist but did not include features that require persistent audio.
I don't see where this is declared even after looking in Info.plist - did anyone else experience this issue? How did you get around it? My app doesn't use audio at the moment.