Twilight Zone Intro Download?

Question

I was looking for a free mp3 download of the twilight zone intro. the "lyrics" are:

You unlock this door with the key of imagination. Beyond it is another dimension: a dimension of sound, a dimension of sight, a dimension of mind. You're moving into a land of both shadow and substance, of things and ideas. You've just crossed over into... the Twilight Zone.

If anyone can direct me to a site where I can download this as an mp3 file I would be so happy.