An Audacious command to switch (some) audio streams automatically

Check the box for "Song Change" in Parameters > Plugins > General, open the plugin parameters and insert the above command under "Command to run when song title changes (for network streams)" : audtool playlist-advance

Note that we could also decide to tell Audacious to check if enough time has elapsed since we started listening to the current stream before switching:
if [ $(audtool current-song-output-length-seconds) -gt 180 ] ; then (audtool playlist-advance) ; fi

Of course, this will not work with streams that do not advertise titles. Such backward streams are shamelessly keeping things on the wrong track.