You can search any files like mp3 mp4 avi torrent files ed2
I wont search song "no one knows"
So you nee just internet exploer or something else (browser)
go to http://google.com
wright in search
Intitle:"index.of" (mp3|mp4|avi|) no.one.knows -php -asp -html -htm -cf -jsp
--you typing format that you wont to search (mp3 mp4 avi) and song or movies or file name like this
You can see video how to do that
http://www.youtube.com/watch?v=sRv953XZX6Y