Linda Yohn will spin listener requests and dedications on her annual Valentine's Day special, tomorrow -- Friday the 13th, no less -- from 9am-noon on WEMU. Grab your sweetie, tune into 89.1 FM, and enjoy the sweet and jazzy sounds from Linda, one of the jewels of the dial. Eastern Michigan University's splendid public radio station also will host a special benefit called "For the Love of WEMU" from 7am-3pm on Saturday at the Northside Grill in Ann Arbor. All tips will benefit 89.1, and Linda herself will be waiting tables from 11am-1pm. Be kind, be generous.