Icons original authors:
[folder.png, folder_play.png, item_delete.png, item_new.png, item_rename.png] - Evan Brooks (http://brsev.com/)
[prev.png, next.png, pause.png, play.png, stop.png] - Webdesigner Depot (http://www.webdesignerdepot.com/)
[file_play.png, file_pause.png, file_stop.png] - MazeNL77 (http://mazenl77.deviantart.com/)
[parent.png, item_save.png] - PixelMixer (http://pixel-mixer.com/)
[check.png, uncheck.png] - Oxygen Team (http://www.oxygen-icons.org)
[up.png, down.png] - Alessandro Rei (http://www.mentalrey.it/)
