During my web browsing experience, I happened to stumble upon a really interesting rom hack thing for ocarina of time. This is no ordinary hack, its more of an overhaul and the hackers version of Ura. The screenshots are amazing, there are all new dungeons and temples, this game has a new storyline which takes place after the defeat of ganon, hyrule castle town has gotten a makeover as well. A character from the beta version of OoT is making an appearence and that's as far as I know.

This appears to be the official website. The Legend of Zelda ~OCARINA OF TIME URA~ | About the Project

if you want to hear the music or see the screenshots, they'll be in the multimedia tab. I find this project pretty cool and I hope that the team will complete it eventually.