CROSSOVERS

LeBron's New Play

When media moguls convene at Allen & Co.'s kickoff event in Sun Valley, Idaho, they'll be joined by an unlikely guest: LeBron James. The basketball giant is attending the conference to "listen and to learn" for ways to expand his marketing company, LRMR Marketing. James will also be rubbing elbows with Cablevision CEO James Dolan, who is thought to be pursuing James for the New York Knicks. But another important New Yorker will be absent: Mayor Michael Bloomberg, a regular guest at the event.