The Creative Commons organization was founded in 2001 as a means of permitting creators to license their work for public use under conditions they specify. Although not an alternative to copyright and not an indication that a work is part of the public domain, Creative Commons licenses permit the holders of copyright to define more clearly, than perhaps modern copyright law interpretation allows, how their works may be used and give users of copyrighted works greater creative freedom when they know, without question, how copyrighted works can be incorporated into new creations.
Creative Commons Licensed Content
Below are links for locating images, music, and other resources licensed through Creative Commons.
This image search engine returns both Creative Commons and non-Creative Commons images. When you download any image, you can also download the necessary HTML to appropriately attribute the image to its creator.
A community music remixing site featuring remixes and samples licensed under Creative Commons licenses. Music on this site is licensed under a Creative Commons license. You are free to download and sample from music on this site and share the results.