My friend, who is a producer for music part of advertising films, visited a office a few days ago.

He informed me very interesting thing that expansion of Internet and Youtube caused a new dispute for their business.

One of well-known music producer participated to advertising commercial film for a certain Japanese manufacturer. He achieved his job successfully with using a foreign music and the film also got good reputation, all were well be expected. However....

Someone uploaded the film on Youtube.

The contract to use the music were limited for the film and within Japan. So licenser found the video on Youtube complained that it is breach of the contract, since the film could be referred by people from all over the world, but not within Japan.

This never happened while broadband was not expanded and Youtube did not exist.

I could not know what they handled the case.
I will follow the matter and will report here again.