If you can't cut a rug when Sarah Brokenleg (a.k.a. Sadie Soul) takes the stage, it's probably time to buy an oxygen tank. The vinyl orgies would get a stamp of approval from John Cusack's character on "High Fidelity," but its populist purveyors aren't cliquish with regard to their loose-limbed disciples. Young and old; funky and frumpy; red state and blue state-it's all soul deep. Listen to our podcast preview.