Store extra metadata in Track object

[neoassyrian]

Is it possible to store "Extra" metadata as part of the "Track" object. Things that can be stored as part of the extra metadata is playlist name that this track is part of, or extra metadata that can be later used in sending analytics back to the server using the service.js without the need to get the extra metadata from the store or the app cache.

I was thinking of having an extra "String" field on the track that can store a JSON of extra metadata.

[neoassyrian]

Just realised that there is a header object that can potentially be used.
#304

However, not much documentation on how to use it. Can this be retrieved in service.js when the track-changed event is fired?

[jspizziri]

The original track object can be fetched at anytime by calling the getTrack method.