That song forever!
That audio was from "The Lord Of The Rings" but I am pretty sure the movie that originally had it was "Requiem For A Dream". This was the first in many LOTR flash clocks. StrangeClock seemed to have the baton passed to him to finish this series. This was not the best of it, as there was not that much action. Of course, it is a trailer so at least it managed to have good animation with what it did have. The most impressive bit might even be how the suspense is built up with the well animated ring at the beginning.