Main Window UI Redesign

The layout of the main window has several issues in terms of usability and aesthetics. To name a few, the playback buttons (play/pause, stop, etc) are too small and located in a rather odd position, the repeat and shuffle buttons have a very inconvenient location at the status bar, the playlist search bar is too big for its purpose.

Here's a preview of the new look that I'm proposing: http://i.imgur.com/8xy0Q9u.png
This one has the "Large album cover" option activated: http://i.imgur.com/d0nJYCA.png