FYI...I wasn't suggesting Shoutcast as a server. I was suggesting it as a source for valid, working radio URLs that can be stored as playlist entries on whatever media server you want, and/or as a source of working URLs to store as SoundBridge presets.
Fair point - should have read your post more carefully - though to reiterate, it is Windows-centric from a GUI/user point of view.
As for Firefly, this is a music server alternative to iTunes and so on (and a very fine one too) but does not deliver internet radio itself.
the "trick" to share internet radio with iTunes also works with Firefly.
In iTunes, simply put the stations you're interested in (the number isn't limited) into a playlist which (for example) you name "Internet Radio". Then have Firefly rescan the iTunes library.
If you then chose the iTunes playlist "Internet Radio" on the SoundBridge, you will find all the stations you included and the SoundBridge will play them.
A better explanation than your original post
G5, OS X 10.5.8, 3 x M1000, iTunes 10.4, slimserver 6.2.1/alienbbc (now redundant), firefly svn 1586, uNSLUng 6.8