The Linux boxes are more stable, but we use a lot of WinXP boxes to be able to stream the audio and listen to recorded audio across the Internet to remote monitoring locations. There is a supplier here in Dallas that has done very well for us on the WinXP boxes. If you need info let me know and I'll shoot you a link and contact info as I don't think we're supposed to post that openly.

BTW, supercircuits is good. That is where most spy shops buy there supplies to build into hidden devices.