this idea is implemented on tm-tube and it says some of the websites the video is presented
for example I picked a random video
http://www.tm-tube.com/video/26280/Time.+%28IMC5+winner+Video%29

and below on right you can see
related media
playlist of this category
related tags
websites referring to this item <- it should be this smiley
bla bla bla bla
bla bla bla bla
bla bla bla bla

it's possible to do also the same with the tracks?

i think you know what i'm talking about
1º what you think about the idea?
2º can it be implemented?

We don't track referrals and it's likely we'll never bother with it. It's a YAGNI feature. It's possible though.