There are rumors that there may be a remaster in the works for it. Apparently Square renewed the trademark for title in the UK or something like that. Would certainly like to see it happen. Always really liked that game. It was really different from a lot of things at the time and even the 2nd one wasn't too bad (never played the 3rd one though. Hell, didn't even know it existed. Gotta love that Sony handheld support. >_> ).
Otherwise, you can get the original on PS3/PSP/Vita off their store I believe. Definitely worth the play imo.