Actually the media privacy settings iOS 9.3 adds are in relation to modifying the music library. Prior to iOS 9.3 it hasn't been possible for any app to change your library in any way. With iOS 9.3, an app can ask permission (if you're an Apple Music subscriber) to add songs to your library via the StoreKit framework and there is an authorisation step to go through. Confusingly, the privacy setting for this is called "Media Library" but you can still get read only access to the Media Library without your app ever even appearing in this privacy setting list (so this Music Tracker app will run on iOS 9.3 without being asked permission to access your library and you can't change that - I'm suggesting that shouldn't be possible and Apple should make read only access subject to a privacy dialogue).
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