I'm With You (2 Lp's)Losing John Frusciante for a second time doesn't send the Red Hot Chili Peppers into a tailspin. By now, the Chili Peppers shed guitarists like a second skin, changing their outer layer but retaining their inner core. Such is the case with I'm with You, the band's first album since 2006's Stadium Arcadium. If that double disc was defined by its unwieldy sprawl, its songs spewed not sequenced, I'm with You is characterized by its focus, both within