I consider Windows 7 an improvement over Vista for sure. XP is nice and stable now but look how old it is. All dozen or so Windows 7 installs have all been seamless for me so far. No more fighting to find a driver that actually works.

Just a personal opinion, of course.

As far as actual advice, You could alternatively use WinAmp Remote to stream from your own PC to any other Internet device. I used it for a while and it worked well. Definately works in XP.
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With great power comes Awesome irresponsibility.