lijon/AudioShareSDK ? reverse-engineered prompt

Build me a small Objective C SDK that lets my iPhone app send audio files to the AudioShare app and also bring audio back from AudioShare into my app.

I want it to be easy to drop into an existing project, with a simple shared instance I can call from a button tap like Export to AudioShare and Import from AudioShare. It should work with files on disk or audio data in memory, and if AudioShare is not installed it should handle that gracefully by copying the audio to the pasteboard or sending the user to the App Store.

Please include the basic setup notes for iOS 9 and later, like any URL scheme entries and framework requirements, and make sure the import flow works through the app delegate when AudioShare sends the file back. Keep it simple, practical, and ready to use in a real app. If you need to check current docs online, go ahead.