Disc 1 Track 8 of the FF1 & 2 OST, the new version, that is.

DC++ is the best way to get game music though, using the server vgmcentral.no-ip.com. Just make sure you're sharing at least one game album yourself and have the description VGM in your description field, and you should be all set to get leeching from there Just read the rules too on connect