MuxLab has released a DVI/Audio Extender Kit which allows one DVI channel and one line level stereo audio channel to be transmitted via one Cat 5e/6 cable.
The kit can be used in applications such as classroom projector systems, digital signage, boardroom systems and medical information systems. The extender allows the channels to be transmitted to 230 ft (70m) at all resolutions up to 1080p.