Heard about Radio Swiss Classic on an archived RS Radio show and recently stumbled upon Radio Swiss Jazz when trying to find some background music for a party. Both are great internet music options! Especially like the jazz.
Take a look at MyTuner Radio, an iPhone and Android app that gives you access to gazillions of radio stations around the world.
Some of the best Jazz stations are in Europe, especially the Netherlands. (Check out Concertzender.nl)