Urban America is part community newspaper, part local-music rag. A recent issue transitioned from an op-ed piece encouraging pay raises for teachers to profiles of Orlando MC Swamburger and SoFla R&B act atripthroughthemind. The writing: ambitious and workmanlike, sparked by an unabashed belief in the power of hip-hop culture. The enthusiasm has proved infectious. Since 2000 the monthly, run by publisher Brother Tony Muhammad and editor-in-chief Aisha Medina, has developed a 50,000-plus readership of mostly young urbanites drawn to topics and personalities rarely found in mainstream media.