WCBS-FM, the local oldies station, which for the last few months has featured Micky Dolenz as the morning disc jockey, has switched without warning today to the Jack format. Ugh! I tried listening, but it's terrible. The ironic thing was that on Friday morning Micky gave a live on-air show from BB King's club. No mention was made about the imminent format change. And Cousin Brucie's out of a job, too!