The player has a simple iTunes style interface.
You can choose the tags to display in the panes.
You can toggle between Album and Composition
The panes filter from left to right
You can rearrange them using drag/drop.
Basically you build a playlist.
Instead of panes you can use a cover art to browse your collection.
You can display Albums or Compositions and sort them the way you want.
You can use your own tags in the player.
The first tree can be used in the selection panes.
The others can be displayed in the data grid at the bottom.