I don't get the limited ed background music dlc. Is it we get to play the ost in the title screen menu? then the digital ver 4 track music are downloaded as mp3?

I will get ps4 to play this game coz my ps2 broke before i get to finish it. Now its the chance for me to finish my ff12 journey XD. Don't know whether I should preorder now or wait until it released. Normally the preorder bonus will be included when the game is released right?