Keeping the Dark World Song after getting the Falcon

can anyone make a patch to using the blackjack theme for the falcon's deck and flying it? and keeping the falcon theme for the world map. i also wanted to add terra's(w.o.b. map) theme to mobliz in w.o.r. and locke's theme in kohlingen in the w.o.r. i can keep it when entering but then it goes back to the defaults when entering other areas in the place. or if i add the same theme it starts over. i would love to get help on this.