The files
* Cephalopod.ogg
* Electrodoodle.ogg
* Go Cart.ogg
* Latin Industries.ogg
* Ouroboros.ogg
* Pamgaea.ogg
* Rocket.ogg
are from Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/


The rest (*.wav) are by Ziz, from Hase, under the GPL.