iTunes Radio Stopped Working 3 Days Ago

I like listening to iTunes Radio on my vintage G4 iMac running iTunes 9 in Tiger because of how good the Apple Pro Speakers are. Sometime in the past year, the search function in iTunes Radio stopped working but luckily, I had my favorite radio stations saved so I was still able to listen to them. Then suddenly 3 days ago, the music just stopped mid-stream. The "buffering" message displayed for a few seconds, and then the music was back. But now, it can't seem to initiate the connection at all. I can still pull up my favorite stations on the InterwebPPC browser, but it would be nice, and a lot easier, to just play them in iTunes like I always did.