While it is certainly not legal, emulators are one way to play almost all of the SNES rpgs, FF6 included.
... in fact, that's how I had to finish the game too because my SNES pooped out on me right around some certain events on a Floating Something-Something (talk about a crappy time for my system to fry...)

but, yeah, emulators are technically stealing and all that... but hell, fansubbing isn't exactly moral conduct either...