Which if you download it just is a redirector to:
So, make sure your firewall is going to allow the wacky port and you are off:
Update: Saving the stream
This is how you can save the audio stream and listen at the same time! You can also get mplayer to parse the playlist file for you:
mplayer -playlist http://abc.net.au/streaming/triplej/triplej.m3u -dumpstream -dumpfile /home/greg/mp3/hottest_100.mp3
Mplayer, I love you.