Hey, did anyone out there know that the Chicago Symphony keeps a 2 week archive of radio broadcast series online, right here? I know the New York Philharmonic does this as well, but they make you use Real Player. You can play the CSO broadcasts straight off their site.
I would heartily encourage you to listen to the December 30 broadcast, a rebroadcast of a 2005 concert featuring the world premiere of Elliott Carter's Soundings. Daniel Barenboim's introduction to the work alone is worth the trouble-free listening from America's Second City!
Over time, I would like to gather a list of all the major orchestras and organizations who provide this kind of service to the general public, a truly selfless act on their part, and one which needs to be well-publicized.