I do not read the stereophile mags but I have made
inquiries in news groups about what's the best
classical music webstream.

Regularly I have on KCNV even though I don't live
anywhere near Las Vegas.

Most recently I got a tip for KUSC.

My soundcard is a Turtle Beach Santa Cruz which uses Cirrus
chipset.

I'm wondering what is a good upgrade path for webstreaming
or if it's even relevant rather than quality of the stream
itself.

And how does broadband change any of it for listenability?

The only target item I've been looking at is the M-Audio Revolution 7.1.