There's a short english version, a short japanese version and 2 instrumental versions of it on Emuparadise.

But since there's a lot of bittorrent and emulator stuff on that site, I don't know if I'm allowed to link directly to it.

However... if you want to go to it, simply search for "emuparadise" on google and the link to the site should show up. Then go to "soundtracks" and then "Kingdom Hearts" and download all the tracks you want.