I really want to play this song but I can't find the sheet music for it anywhere...does anyone have it or can transcript it from a book to a mus or pdf file?

Is the Cosmo Canyon theme the same as Red XII's theme? If so then it is available at nobuouematsu.com as a gif file.

no...it's from when you go to the town of Cosmo Canyon and the music plays. It's that version in piano.

http://www.fantasysquare.com/music/index.shtml

FFVII/Disk 2

EDIT: thats a gif file though, i think