I have:
FFT OST
FFVII OST
FFVII Reunion Tracks
FFVIII OST
FFVIII Piano Collection
FFIX OST
FFX OST
FFX-2 OST
FFX-2 Vocal Collection
FFX-2 International+Last Mission

Planning on getting FFXI + AV (and more! :P) next time im on ebay.

Also got the Star Ocean III OSTs I loved the music so much i went and bought them right after I finished the game.