Liberty Media announced Wednesday it's spinning off most assets besides Formula One auto racing into a separate publicly traded company, called Liberty Live, and that CEO Greg Maffei is stepping down at year-end.Chairman John Malone will become interim CEO of Liberty Media. Liberty Media's investor day is set to take place on Thursday in Manhattan.After the split, Liberty Media will hold Formula One, which Liberty acquired in 2016 and later spun out as a tracking stock, and MotoGP, upon the closing of that ...