copyright protection

i want to know how can i use all songs from youtube vevo songs and more? i know youtubers ...can use all songs !

Is the only way to post Nintendo games as let's plays or reviews to be in their MCN? Or does Freedom allow us to play Nintendo licensed games? The real question is, I see gamers who are partnered with Maker, or Machinima playing and posting Nintendo games. How can I as well, as a Freedom...