The Educational Media Foundation (EMF), a not-for-profit radio station operator specializing in Christian music, stunned Chicago's rock music community on Monday with the news it had acquired for $21.5 million one of the city's iconic rock music stations, WLUP-FM (97.9). Rocklin, California-based EMF plans to change the station's format as soon as today to an adult contemporary Christian music format - which no doubt will be a hard switch to swallow for many rock music fans accustomed to...