Media

Video

See Wikimedia Commons, OurMedia[1], and Kaltura[2].

Audio

See Jamendo, Freesound, our Sound samples archive, Wikimedia Commons, Librivox, and Colingo

Images

See Wikimedia Commons and Flickr (CC licensed images).

Photos

http://flickr.com/photos/lirne/2876702341/

Textures

• via Flickr

  See also the recommendations from that photo-description.

Flash animations

See EFK, DC XOploration, and more.

Clipart

See Openclipart and Wikimedia Commons