"Comfortable Mystery 1-4" (c) by Kevin MacLeod from incompetech.com 
"bumm_ground" (c) by robinhood76 from freesound.org
"bumm_platform" (c) by speedenza from freesound.org

All of them licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/


