Maybe someone's interested:
I just stumbled across this post on Engadget and decided to give it a try. Following the instructions on the author's website is really simple and it plays nicely with iTunes (on my win machine) and with my iPhone. Having the perl script and Squeezeplay running at the same time is no problem and both audio streams play parallel. It would be definitely a bit more interesting if we had a SBS Plugin for this but still...it could be worse
