The long-short of it is that some artist is suing Jay-z over a sample included in Blueprint III. The details are almost irrelevant, because I cannot fathom how this falls outside of the scope of fair use. From what I've seen, and correct me if I'm wrong, the only reason people get away with suing in nonsense cases like this is because it is easier and cheaper to settle than to actually litigate to verdict.
HOV has the resources to litigate, however, and it would be nice to see copyright sample trolling of this sort simply put to bed altogether. It's a nonsense claim and very frustrating to see it reported on as if Jay-z was somehow a bad actor. It would be great if Campbell v. Acuff-Rose was unambiguously expanded to samples of all sorts, not merely parodic samples.