So this is pretty rad: Evidently, if you act quickly, you can score yourself tickets to see Jónsi of Sigur Ros at the Paramount Theatre on Wednesday for just $7. There's no catch, near as we can tell. You just have to sign up, and then you're provided with a special code that gives you the hook-up. The exclusive offer is being presented by Live Nation in association with Microsoft as part of its Windows 7 Section 7 deal. Hop to it. It's a while-supplies-last sort of deal and only good today.