I really want this song too, I posted the same question a few days ago and have nothing so far. I fear that the person may just be an actor with a good voice, and that it isn't a 'proper' song.
Anyway, I shall let you know if I do find anything out.
I would also like to know the artist and name of that song. It sounds really good. I have had no luck so far, but I will tell you all if I find anything.