Alban emailed me this collection of internet radio stations playing vintage music from the 20's and 30's. There's an interesting spread of musical styles, including one channel that specializes in classic horror and mystery dramas. One unfortunate drawback is that the free audio streams have contemporary commercials.
In a wonderful example of just how small the world really is, one of the stations, Radiola! , is hosted by Andy Senior, a classic music fan from my area of upstate New York.