Well here's all the FFX midi's I was able to get from all over the web.
Blitzball Gamblers
This is your story
Battle theme
Boss Battle
Attack
Auron's theme
Seymour battle
Seymour's ambition
Blitz Off!
Brass de chocobo
Yuna's theme
Otherworld
Silence before the storm
Someday the Dream will end
Summoned
Summoned beast battle
To Zanarkand
Wandering Flames
Welcoming Maika
