Agree that GPRS is a problem. I tried it with T-Mobile (USA), and could stream BBC, but not Highlander.
I have occasionally connected my Sprint Vision phone to my pocket pc, which I connected to my car radio, and streatmed Highlander Radio at 64k with no problem. Unfortunately, it can be argued that this violates Sprint's Terms of Service, so I can't do it on a regular basis.
Works great with WIFI and pocket PC, when working around the house.