The Obama campaign has released its first ad specifically mentioning Bill Ayers by name:

"Bill Ayers is a professor of education who once served with Obama on a school reform board, a board funded by conservative Republicans tied to McCain," says the ad's narrator. "When Ayers committed crimes in the '60s, Obama was 8 years old. Obama condemned those despicable acts. Ayers has had no role in Obama's campaign, and will have no role in his administration."

The audio file can be heard at Ben Smith's blog on Politico.com.