Beleagured Fulton County Sheriff Jackie Barrett is on the hot seat once again, this time over a music video produced at the Fulton County Jail last week.A music video for rap artist "T.I." (23 year-old Cobb County work-release inmate Clifford Harris) was produced in the maximum security wing of the downtown Atlanta facility, and during the time that the video was being produced, ostensibly without Barrett's knowledge, a prisoner who was being booked in slipped OUT of the jail.Clifford Harris, who goes by the stage name "T.I.", is part of a work release program in Cobb County, officials confirmed Friday....