THE streets of the capital are what 8-year-old Masinah calls home. While many thousands of kids her age attend morn-ing school, she's out on Jakarta's thor-oughfares trying to scrape together a living. This she does with a rudimentary 'musical instrument'—a string of bottle caps. Peering through opaque vehicle windows, she performs her tired ritual of hammering out tinny music to which there never was a tune, exhaust fumes and filthy belches fr