Drudge is Obama’s poodle.
Likely the tape (if it truly exists) is being withheld until Obama is nominated, or until Hildabeast concedes. When that happens, the tape will be played.
Hillary might be waiting to play it, but I doubt it. Likely, some conservatives have it and will wait until after Obama is nominated. Maximum impact. The dems will either have to dump Obama (which will strip all of the black vote from the Dem party), or run a candidate who has attended a racists church for 20 years with his racist wife.