I never heard it in the game, if it's anywhere it'd have to be at the end. I had downloaded it at one place when FFX music started to make it on the internet before the game came out, but I think it's kind of like how 'Across the Stars' is in Star Wars, it's Anakin and Padme's theme but it's a combination of Anakin and Padme's theme AND The Confrontation with Count Dooku, so the songs not even in the movie but on the Soundtrack.

But then again video game soundtracks arn't always like movie one's so it might be in the game, just really faint and unnoticable.