I always thought the music for Final Fantasy XII was pretty underwhelming, except for two tracks: the game over theme (which has already been OCRemixed) and "Seeking Power", which as far as I can tell hasn't been remixed yet.
Therefore, my selection is "Seeking Power" from Final Fantasy XII.
Youtube link: http://www.youtube.com/watch?v=6wzU706vNlA
Start: on 3/21/13
Deadline: on 4/1/13
Voting: on 4/3/13