I totally missed that posting!
First of all, iTunes 2 is working well at Mac OS 9! Including all the streaming features. Only "regression" is that 2 or 3 years ago, Apple Servers stopped to send the preconfigured radio station and the "presorted list" of stations by genre at every iTunes start.
But there is not problem listening to any radio!
If you donĀ“t like iTunes, you can also use SoundJam or Audion, two other very well programs that can handle streams. And there are for sure some other programs out there. And finally you can even use online radio with QuickTime itselve at any time.