Use it for any purpose, such as in a computer game you have made or as background audio for a video you are editing.
Remix it or use parts of it in your own creative works.
The only restrictions are:
You must not restrict others from having these same rights when you pass the data on.
You must acknowledge me as the original author.
As with the GNU GPL, the spirit of the licence aims to allow you and others full freedom to do anything you want with these files except for preventing others from having the same abilities as yourself.
You should also be able to find these files over on Open Game Art.