Carpet.png, cell_shadow.png, Metal.jpg, torch.png
    are released in the public domain

chain
    based on work by Wagner51, released under CC-BY-SA 3.0 (http://fr.wikipedia.org/wiki/Fichier:End_link.svg)
    with texturing based on images from burningwell

gnu.png
    by Benjamin Arnaudet
    released under GNU GPL license
    
Rope.jpg
    based on work by Chris Huh
    released under CC-BY-SA 3.0

tux_body, tux_shadow
    by the original SuperTuxKart team
    released under GPL v2