Director Attention: Cumulus Dir./National Sales Rachel Williamson has joined Cox in the newly created position of Dir./Digital Revenue Development. She'll oversee digital revenue growth and integrated sales for the company's 59 radio brands. It's a return to the company for Williamson, who spent six years at Cox/Louisville as Sr. Account Exec. and National Mgr./Sales. Her prior stops also include Cox Digital Solutions/New York, Arbitron/Nielsen, Hubbard/Chicago and Forever Communications.