All sounds are released under GPL, except:

* engine_large.wav
    Released under the Free Art License
    by the TORCS project "http://torcs.sourceforge.net/"

* skid.wav 
    Released under Creative Commons Attribution - Share Alike License 3.0
    by Atheal Washington and Stephen Dunn (stevo14)

* bowling_roll.wav
    Released under the Creative Commons Sampling Plus 1.0 license (http://creativecommons.org/licenses/sampling+/1.0/)
    By Marianne Gagnon (Auria), based on "PaintCan.wav", "StoneSpinLong.wav" and
    "PaintCanDropHardAndRoll.wav" by daveincamas, released under the same license
* gp_end.wav
    Released under the Creative Commons Sampling Plus 1.0 license (http://creativecommons.org/licenses/sampling+/1.0/)
    By Marianne Gagnon (Auria), based on "Approx_850_Enthusiast_Audience" by lonemonk, released under the same license
* horn.wav
    Released under the Creative Commons Sampling Plus 1.0 license (http://creativecommons.org/licenses/sampling+/1.0/)
    By Marianne Gagnon (Auria), based on "claxon" by han1, released under the same license
* parachute.wav
    Released under the Creative Commons Sampling Plus 1.0 license (http://creativecommons.org/licenses/sampling+/1.0/)
    By Marianne Gagnon (Auria), based on "kiss" by roscoetoon, "kissy_sound" by FreqMan,
    "rockets" by SmiertSpionem and "Swishes" by Pogotron, all released under the same license
* shoot.wav
    Released under the Creative Commons Sampling Plus 1.0 license (http://creativecommons.org/licenses/sampling+/1.0/)
    By Marianne Gagnon (Auria), based on "rocket_exhaust_1" by smcameron and "rockets" by SmiertSpionem,
    both released under the same license
          
* engine_small.wav
    Released under Creative Commons sampling Plus 1.0 License (see above)
    by Stephen Dunn (stevo14), based on "lawnmower" by morgantj.
    
* anvil.wav
    Released under the GPL
    by the "Battle For Wesnoth" project
    
* strike.wav (Based on sound "11913201" by Radio Mall)
* goo.wav (Based on sound "Slime pour horror juicy" by  BLASTWAVEFX 02344
    Released under the SoundSnap license (http://www.soundsnap.com/licence)
    
SoundSnap license (short version) :
    |    You are Free:
    |        - To remix or transform the sounds in any way
    |        - To copy, distribute and transmit the sounds
    |        - To use the sounds in any music, film, video game, website etc. whether commercial or not, without paying royalties or other fees
    |    You Cannot:
    |        - Make commercial distribution of these sounds 'as they are'. For example, you cannot download and sell them as part of a CD library


Creative-Common Sampling Plus license (short version) :
    |    You are free:
    |        - To sample, mash-up, or otherwise creatively transform this work for commercial or noncommercial purposes.
    |        - To perform, display, and distribute copies of this whole work for noncommercial purposes 
    |    Under the following conditions:
    |        - You must attribute the work in the manner specified by the author or licensor
    |          (but not in any way that suggests that they endorse you or your use of the work).
    |        - You may not use this work to advertise for or promote anything but the work you create from it.
    |        - For any reuse or distribution, you must make clear to others the license terms of this work.