WDET-FM, Detroit's public radio station at 1 01 .9, is holding a fundraising marathon October 10 through 13 featuring live broadcasts of jazz and classical music performances around Detroit. The special broadcast schedule is meant to increase public awareness of public radio's possibilities and raise funds necessary to ensure the station's survival. WDET was the only Detroit station to broadcast the Watergate hearings and Congressional impeachment debates in their Magic, mime and acrobatics comes to the Diag. weekdays at noon with the Friends Road Show. Free, weather permitting. The Blues will be haunting A2, with appearances by blues and slide guitarist Ellen Mc Uwaine, at Flood's Tuesday and Wednesday (fh5-l 6), and Baby Boy Warren at the Blind Pig Friday & Saturday ( 1 1 & 12)J It's time foránother SUN benefit, at Carpenter Hall tonight ( f Mi). Come dance with Dallas Hodge in Öeluxe. and the Lightning Red Blues Band. Kick off time is 9 pin, and S2.5O gate gets you all the beer you can drink. If the dancing gets you going, come to an organizing meeting for the Peoples Ballroom, 328 John St. (off División between Madison & Hill) at 9pm, Monday (14). If you'd rather just watch some dancing, try the silver screen of Auditorium A, U-M, on Tuesday. Vanessa Reagrave stars as Isadora Duncan, an early "liberated" woman. The film is The Loves of Isadora, and it's at 7 and 9:30pm. Looking at the more serious side, the Attica Brothers trial will be the subject of a talk by Detroit attorneys Bill Goodman, Ken Mogill and Neal Bush, Lawyers Club Lounge, (S-Univ. & S'State) at 7:30, Wednesday (16). Or check out consumer advocate Ralph Nader in Detroit the same dy, 1 1 am at the Fisher Theater. Relax at home and discover the tube ain't so bad. Margare! Sloan, president of the National Black Feminist Ofganization raps on Black sisterhood, Wednesday (16), 7 pm on Channel 56. Or try catching a range of singers from Richie Havens to The Letterman to Etta James on "American Song Festival", Friday (18) at 1 1 :30pm on Channel 7. entirety. lts programming doesn't include commercials and in the past has been about 60% classical. The people at the station hope to raise $25,000 from the drive, in order to match an anticipated federal grant which would provide them with a much-needed new transmitter, antenna and production equipment.