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ET has learned whether shock jock Howard Stern will indeed be joining "American Idol" once Simon Cowell says so long at the end of the current season.

A source tells ET that Stern will definitely not be a judge for the popular FOX show.

Rumors started swirling when a report came out last week saying Stern was in the running. Fuel was added to the fire when Stern reportedly said on his radio show that he would consider taking the job.