Be careful with those HP thin clients. Most are of little use for anything but as a workstation on a network. Most have little RAM in them. Be sure to check out the hardware stats before you purchase it. Make sure it will support what you want to do with it. Some do not have any means of running a local operating system. This one with XPe obviously can. Now then, if you do have an appropriate model running Linux can be useful. You can run the free Shoutcast server on Linux (I highly recommend this over running it on Windows). It won't offer the tag information like ScannerCast but it can be run on a minimalist Linux system, Arch Linux perhaps, all free, very stable and secure. If the box has enough RAM and CPU to run Linux with a GUI I'd recommend Lubuntu. It's not yet an official Ubuntu supported distro but is very lightweight and offers a basic GUI. You could choose any of the flavors of Ubuntu as well or OpenSUSE. For the purpose of running a streaming server they're all the same.