Can I & how do I backup gamecube games?

As you can tell by my user name I have 5 kids, well they have managed (after a few years usage) to wear out 1 of the games- super smash brothers melee. It is starting to crack from the inside and I wanted to know if I can copy it before it’s too late. They love it and I don’t want to have to replace it! any help is useful.

Thanks,
mommyof5

Perhaps this link will help:
http://club.cdfreaks.com/search.php?searchid=2580964

If it doesn’t work, go to this link and type “gamecube” in the search box: http://club.cdfreaks.com/search.php