Yes and as a protip setup a SE account and link your Steam account to your profile. This way your FFVII cloud saving feature is always linked and you never have to log on again no matter how many times you reinstall the game. It just does it automatically.
When I'm Miqo'te http://www.youtube.com/watch?v=h3LGf9SSWrU
Its easy enough to replace the music files TC. Just copy and paste from a source found online. Unfortunately thats the only 'mod' you can do without breaking the new additions (cloud saving and achievements).