This site contains animated libraries of the phonetic sounds of English, German, and Spanish. Available for each consonant and vowel is an animated articulatory diagram, a step-by-step description, and video-audio of the sound spoken in context. It is intended for students of phonetics, linguistics, and foreign language. There is also an interactive diagram of the articulatory anatomy.
To find out about how this project was completed see http://newali.apple.com/ali_sites/ali/exhibits/1000072/Introduction.html