I've some custom media (special map points for instance) I wish to connect custom data player by using it and put its instances on television library (so these to be around on television gallery), keeping possible ways to edit it whenever user really wants to. how to get it done?

Sorry for my Eng.Lang you can edit this.

Performs this:

http://orangesplotch.com/blog/wordpress-media-plugin-tutorial-1-custom-media-tabs/

describes what you're attempting to do?