An online radio station that has been mentioned before on this forum is www.concertzender.nl
out of the Netherlands. It is really a superior resource in my opinion. All of music is there, from western classical/art music, including early music, renaissance, baroque, classical, romantic, and modern, to jazz, world, and pop thrown in for good measure. Excellent programming from the DJs (should we still call them disc jockeys, or would digital-storage-and-retrieval-system jockeys be more appropriate nowadays?).
This is the station I listen to, for its quality and variety.
Jas, would a sticky for online radio stations be appropriate for this forum? I believe many members would appreciate such a resource.