Ed Meyer, the Peabody Award-winning reporter at WMAL-AM (630), starts a five-part series on the latest taste in chocolates today at 6:20 p.m. News assistant Mary Fortkort did the research for "Santa's Sweets" . . . WGMS-FM (103.5) concludes its special salute to Beethoven, whose 214th birthday would have been Dec. 16, by playing all nine symphonies tonight, beginning at 7 p.m. . . . Bob Dalton, business and economics reporter for WTOP-AM (1500), will be honored tonight by the area Broadcast Pioneers. Dalton, who also works for WDVM-TV, joined the radio station in 1965 but has been around locally since 1951 . . . For their portrayals of working women's issues, the National Commission on Working Women cited several radio shows, including "A Lifestyle Report," by Anna Mae Sokusky for CBS Radio Stations News Service, Washington, and National Public Radio's "The Golden Cradle -- Immigrant Women in the United States," independently produced by Louise Cleveland and Deborah George . . . "Hunger in America," produced by Rusty Lutz and Bill Sinrich and reported by Peter Laufer for NBC Network Radio, has won the 1984 World Hunger Media Award. The Lutz-Laufer team has also received a Gabriel from UNDA-USA, a Catholic association, for their "Healing the Wounds/Prisoners of War," a look at Vietnam veterans.