1 http://www.gentleface.com/free_icon_set.html
2 The Creative Commons Attribution-NonCommercial -- FREE
3 http://creativecommons.org/licenses/by-nc-nd/3.0/
6 http://www.freesound.org/samplesViewSingle.php?id=2166
7 http://creativecommons.org/licenses/sampling+/1.0/