Added three more ArrayLists to keep track of each type of media the user owns and added an accessor method, getLibrary(), to get a list of what media types the user owns.
Organized some imports
Implemented some comparators which are used in sorting the objects.
Created an interface for both the user's library and for the user viewing the media store itself. Still a lot to do, but this is a nice foundation.

Includes the ability to filter by type of media object using toggle buttons at the top. Sorting is also available by left-clicking on the column headers. Type sorting is not available yet.

There is a logout button in the bottom-left that fires an event when the user (or whoever) logs out, so listening to the user interface for when the logout button is clicked is possible.

Probably some more stuff that I forgot.