Chris Willman Music WriterBrandi Carlile goes full glam — and fully emotional — in the Courteney Cox-directed video for her new single “Right on Time,” released Wednesday simultaneously with the full details about her forthcoming album, “In These Silent Days.”Cox is known mostly for being in music videos, not behind the scenes on them, thanks to her star-making (?) cameo in Bruce Springsteen’s “Dancing in the Dark” in the mid-1980s.