Do a mix, but only if it is appropriate. For example, if there is a scene that is heavily remeniscent of the original game, then use the music that scene had in it. If eerrrr's music is really good, and in the vein of FF, put that in some of the new scenes. It'll work great.
EDIT:
BTW, eerrrr, is there a good freeware music editing program I can download? I've always wanted to mess around with that stuff. Thx.
[This message has been edited by MMiller8 (edited July 18, 2001).]