The Music file "04-Avastar-1024th floor.ogg" is from "Fake Plastic World" by "Avastar"
and is avaible under a creative commons share alike license:
http://creativecommons.org/licenses/by-sa/3.0/
from
http://www.jamendo.com/

Sound Effects are Public Domain and are obtainable from:
http://www.pdsounds.org/
http://hamsterrepublic.com/ohrrpgce/Free_Sound_Effects.html