Theres a possibility to re-watch movies that happened within the game, and listen to music that was in the game of Final Fantasy X. In Luca, theres a theater where you can watch all of the FMV's from the game and listen to music. Techincally, you have to purchase each sphere to watch any video or movie. Plus you have to have finished the game to purchase the entire selection. Each Sphere costs 5,000 Gil. So a large amount of Gil funds is needed to purchase all of the spheres.