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“It sums up the beauty of obscurity,” says one of the subjects of the film So Wrong They’re Right. He is referring to 8-track tapes. With friendly, folksy titles, and a suitably wobbly soundtrack, this lovely homage is surprisingly informative and genuinely funny. But don’t laugh too loud—a Sex Pistols cartridge recently went for $100. Conceptually consistent, directors Russ Forster (editor of the ‘zine 8-Track Mind) and Dan Sutherland covered a 10,000-mile loop of America in their quest to validate the discarded technology. Along the way they conjure such cosmological concepts as 3-D quadrophonic 8-track! Whoa. At 9 p.m. at 9:30 Club’s Atlantis, 930 F St. NW. $5. (202) 393-0930. (Dave Nuttycombe)