The KQED-FM Public Radio (Northern California) MP3 stream is now freely accessible (except for data charges) over AT&T/Cingular MEdia Net (and presumably other carriers) at . Highly recommended.
(It was previously inaccessible over MEdia Net due to the fact that it was previously only available on port 80. To its great credit, the station also put the stream on port 8000 in only a week after I asked.)