The Dreadful Fight is available for download on Group 7
Of course, it would be nice if someone could record the Prologue theme, World Map theme, Battle 1 theme, Cave theme, Battle 2 theme, Dreadful Fight, Final Battle, and Credits songs... but I can be patient. I'm curious as to how they adapter the soundtrack to the (dreadful) GBA synth.
edit: It appears CaitSith2's GSF archive has been updated with FFIV already. tbqh, I like most of the songs BETTER than the SNES originals. Most of the crappy bass synth I hear in other GBA games seems to have been used very well in this game... only makes me anticipate FFV and FFVI even more!