Add player event callback and better playback control to the AudioPlayer

With the Podcast Template now being available, you would expect the AudioPlayer to support more advance features such as getting player events and ability to track where in the audio stream the user was listening.

The current AudioPlayer offers very minimal features and do not offer enough to save and continue playback or track which podcast episode the user has finished listening to and so forth.

Please add features to get events from AudioPlayer so I can store/retrieve and better control the playback experience.

Also being able to specific location (or time) in the stream would be nice to have as well.

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Also from a user perspective, you get a minimal player and cannot even see what is in the playlist so it is not just the developer API. The player itself seems very limited in supporting a more advanced use case like listening to podcasts.