My house wide music solution at home has been achieved with a couple of Slim Devices’ Squeezeboxes (in different versions). As the server can stream audio and has a web interface it is a perfect tool for using with my Nokia N770 as the latest update(s)/installation comes with a skin suited the the Nokia’s screen as you can see. The Slim Devices community wiki (here) gives you the simple steps on how to set your N770 up to access the page leaving your normal browser views unaffected.
You can go one step further as the Internet Tablet is capable of playing audio streams it is possible to connect the N770 to the Slim Server – so you control and listen from the same device. The information on picking up the audio stream is a little more complicated but only marginally so.