I couldn't have believed it would happen, but mine hung on KUOW's website, too! I don't have Jukebox's image on my Audrey (tried it, but decided I wanted the Datebook too badly!) so that's not the problem. Some stations have way too fast a data stream for Audrey to deal with, I guess. I've found that anything with RealPlayer 5 or lower works fine, its iffy on anything above that.
For a good station that will probably work, go to www.wpr.org (Wisconsin Public Radio) there are a couple of links that serve Version 5 of RealPlayer, and you might find what you're looking for there. Also, I listen to NPR jazz a lot, I have bookmarked www.nprjazz.org/stations and there is a link to state-by-state lists of jazz stations. Tapping on a state starts you on the part of the list for that state, but you can scroll up or down to all the others. Many don't work (don't even bother with the Windows media sites!) but here is a list of those that will, by state: CA: KCLU, IL: WGLT (S), KS: KANU (S), MD: WEAA (S), NJ: WBGO (S), NY: WBFO, OH: WMUB (S), PA: WRTI (S), and WA: KPLU. The (S) stands for stereo. Sometimes the stereo stations get a bit fuzzed up, especially when I'm running a lot of stuff through my PC, too, I have a router hooked up with only dialup access.
Perhaps NPR has a list of state-by-state stations for the Prarie Home Companion and those things you've been looking for.