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Want to know just how incredibly confusing and impossible copyright law has become? Just take a look at this lawsuit, filed yesterday by some music publishing companies against Microsoft, Yahoo and Real Networks, claiming that the online music stores each of them runs (the Zune store, Yahoo Music and Rhapsody) infringe their copyrights (thanks Eric Goldman for sending this over). How can that be, you ask? Surely these companies properly licensed the music they offer in their streaming/download offerings, right? Well, the lawsuit doesn't provide that much in the way of detail (and I've spoken to a few copyright lawyers -- none of whom seem to agree with each other!), it sure looks like the claim is that Microsoft, Yahoo and Real may have licensed the copyrights on the recordings, but did not license the copyright on the compositions. It sounds like (though, again, the details are fuzzy) that the record labels did licensing deals with these music services, but publishers and labels are separate entities (even if the labels own many publishers), and the rights are separate."
http://techdirt.com/articles/20090630/0046095409.shtml