Like a lot of people in small towns I live out of range of most stations that broadcast classical, jazz or folk. But I live close enough to civilization to have cable internet and its my main source for everyday listening. And most of the stations based in large cities have knowledgeable Djs or carry very good syndicated shows.
I used publicradiofan.com to find potential stations. The Whats On Now section is sometimes wrong, but it lists hundreds of stations and programs and provides links to the stations web sites and their various feeds.
Two stations I listen to daily are KCSM and KVOD. KCSM has one of the universes largest Jazz libraries and the Djs are knowledgeable and professional. KVOD is a classical station in Denver. It doesnt stray too far off the beaten path and plays some of the same syndicated NPR programs that other stations play but also covers the Colorado classical music scene. Both stations sound great.
XM radio also provides free online Classical feeds that are pretty good.
JPO