Matt Reynolds's all-ages, punk-rock, green-anarchist exchange of all things musical is going on its tenth year, having migrated slowly south from its original North Palm Beach location to Okeechobee Boulevard, and thence to its present locale in the industrial neighborhood along Georgia Avenue. A bare-bones operation of roughly cut shelves and record bins, Sound Splash is home to the area's largest collection of alternative-music rarities, as well as radical and oddball literature. Fliers on the walls tell you how to hook up with a ride to the next antiglobalization showdown or militant feminist poetry workshop. Evenings feature the occasional thrash-ska hoedown. The new space (store implies too much organization) includes an interlinking set of courtyards out back, where you can feed the cockatoo.