There's a station on the Internet Radio of WinAmp called Starbase 479.  Mitch gave me the heads-up about it:  they play audio books of Star Trek books (sort of ugh) and Star Wars books (slightly less ugh) and other sci fi books (more interesting) and BBC sci fi radio shows (even a little more interesting) and sometimes in the afternoon they play the audio of Star Trek episodes (totally freaking awesome), but this morning they are playing the Hitchhikers Guide to the Galaxy radio shows and I am really excited about this!!  I've never heard them before.  This is the best ever.