"Back in the day -- 1977 -- Houston was a sleepy cow-town, known mostly for petroleum-related businesses, serial killers with "Wayne' in their name, and the Astrodome..." So begins the epic saga of Sound Exchange, as told on its extremely entertaining Web site. But here's a spoiler alert: The saga ends with a few dudes running a great new-and-used record store out of a cool two-story Montrose home. If you want the new Avril Lavigne-Clay Aiken duet CD of Celine Dion covers, it's probably not your place, but if you get goose bumps digging through hard-to-find new and classic vinyl, or want to check out a good selection of indie, punk, blues, jazz and rock on a newer technology known as the compact disc, then this little brick house is your home, too.