I just started writing a fan fiction for LOZ (no it's not one of THOSE fan fictions) based on OOT but Link doesn't go back and forth through time and its mostly based on Zelda POV. Anyway, this is for my sister's birthday because she just started playing OOT and she loves books and also music. I want to make a mixtape with songs that relate to the game and so far I have a few songs from the Hunger Games soundtrack (Kingdom, Meltdown, and Atlas). I'm using Harry Potter music as the score (yes because it's major epic!!) ^-^ anyone have any good ideas? Score and 'mixtape' ideas would be awesome. Thanks!

I'd give this a shot as far as "Mixtape" might go:
Game: The Legend of Zelda: Ocarina of Time (1998, Nintendo, N64) - OverClocked ReMix (http://ocremix.org/game/67/legend-of-zelda-ocarina-of-time-n64)
[Sidenote: they have more than OOT, if you look around!]

As for Score, try this:
ZREO Mirror (http://zreo.perix.co.uk/)

The folks who arranged the music at link #2, sadly, have gone their separate ways. But there's always new music cropping up at link #1. Hope this helps!