--- /dev/null
+http://www.gentleface.com/free_icon_set.html
+The Creative Commons Attribution-NonCommercial -- FREE
+http://creativecommons.org/licenses/by-nc-nd/3.0/
+
+Sound:
+http://www.freesound.org/samplesViewSingle.php?id=2166
+http://creativecommons.org/licenses/sampling+/1.0/
+
+placed.png, received.png, placed.png
+Free for commercial use
+http://www.iconeden.com/icon/free/get/bright-free-stock-iconset