FRIDAY: Canadian supergroup Stars wowed Death Cab for Cutie fans when they opened their show last year at 9:30 Club, and now they return as headliners to set the Black Cat stage on fire. Of course, this concert has been sold out for ages, and the desperation for tickets on Craigslist is palpable. We’ll see you fellow lucky bastards in what will no doubt be a breathtakingly long will-call line. For the rest of you,…