If they can pay for it, they will come.That's the mantra this week from the daKAH Hip Hop Orchestra, an Los Angeles-based band whose creator and conductor is the subject of a documentary that's part of the 34th Mill Valley Film Festival, which kicks off Oct. 6.The group, founded in the late 1990s by Geoff "Double G" Gallegos as a symphony orchestra augmented by turntables, rappers and a rhythm section, has been invited to play the festival's Oct.