This does inside seem strange. There are several different uses of music at play. Incidental music within film, ads etc needs to be paid for as one artist is

This does inside seem strange. There are several different uses of music at play. Incidental music within film, ads etc needs to be paid for as one artist is benefiting from the work of another. Trying to get end users to pay for this is clunky and perverse, however. Surely the onus rests with the appropriator (i.e. the film maker). 30 sec song previews are a completely different beast. They are ads for the music. Why ask Apple or others to pay for promoting your own product??