For the record, it was Leopold Stokowski who adapted
The Rite of Spring for Fantasia, distilling a 40+ minute composition down to the 22:34 minutes needed to fit the parameters of the film. I think Disney dabbled on the piano a bit, but he couldn't really score classical compositions.
In any case, Disney used the adaptation of
The Rite of Spring and paid Stravinsky for the privilege, even though Disney was not legally bound to pay him at all. You see, copyrights from Imperial Russia were not recognized by the United States and several other countries; therefore, Stravinsky's 1913 piece was considered in the public domain, "but permission was required for distribution in countries where Stravinsky enjoyed copyright protection":
http://bulk.resource.org/courts.gov/...3.96-9205.html
Stravinsky, a man who enjoyed living the high life but who knew full well he couldn't have his champagne and caviar from composing, readily took the money ($6000), and did just about anything else to keep up his celebrity lifestyle, even appearing "in a magazine ad for a record player":
http://www.classical.net/music/books...520256158a.php
Stravinsky did not object to the use of his work in
Fantasia at the time of its release, but only many years later, after he was embittered and denied further funding when a planned use of Stravinsky's burlesque opera-ballet
Renard by Disney never came to fruition.
So let's not make Stravinsky out to be some kind of musical purist, please. In contrast to Tolkien, who took the money for film rights to
The Lord of the Rings but never believed his work could be made into a movie, Stravinsky was completely aware that his composition would be adapted for
Fantasia.