[Nyororin]

This is something I wondered about too a while back, and actually looked into. Believe it or not, all of the use is legal and paid for. There is little discretion on the part of the artist when it comes to where the material is used, which is why I think it seems so odd to someone from outside of Japan. If you pay for the license - you can use it quite literally ANYWHERE regardless of the opinion of the artist.

It`s also interesting that a lot of the time shows have no clue where the music comes from. They are presented with a sample collection to listen to and choose songs from it - if anyone is at fault it`s JASRAC and the groups that make the compilations.