Besides the FFs, one of my favourite game soundtracks is Spencer Nilsen's work for the Sega-CD version of 'Ecco the Dolphin'. It's a great synth woodwind score, with some sampled whale song in a few tracks. If you're looking for something a little different, it's worth a look. What's even better... the game CD itself can be used as a soundtrack CD in any normal stereo. Just don't play the first track - it contains the game data. That'll do bad things to your speakers.

You can get a copy of this game at many second-hand stores for only a few dollars.