Hi ayu511,
I guess you mean the
Piano Sheet Music thread. It's hard to find the files and many links are dead, but see reply number 264 which gathers them all into one place.
Shortcut:
http://lebutler.lunarpages.com/Ayumi Sheet Music
(I suggested to the thread starter that I put that link in the first post but didn't get a reply, instead I've edited the thread title to make it easier to find).