The big problem with the WTO is that it exists to try to find equities in other peoples laws. In my country its legal to do something that might be illegal in yours. The problem with that is that its great when people are talking about physical properties, however its much more difficult when dealing with the same disputes on intellectual property. If I play a radio in my work than its the station that sells advertisements that pays for the songs. As long as I don't advertise the fact like some kind of main street concert hall than I'm not sure why it matters.