THE SOUND PROJECT   The Sound Project Free 5 min Lobbies of: Mum Puppettheatre/ Nat'l Showroom /TBD 115 Arch St. / 113-131 N. 2nd St. / TBD Fax: 15 and up 610-626-2800 Best understood when seen from far away, Lisalouise install themselves as a visual landmark in Old City, communicating with brightly colored semaphore flags. In a technological twist, the movements of the flags transcribe written music into movement and sound. FRI 9/1 - SAT 9/16 When above This show will be located in a number of site-specific location.