Coherence is a set of DLNA/UPnP devices, like MediaServer and MediaRenderer. In addition, it includes a well-designed framework to extend other applications with DLNA/UPnP functionality. It also has an emerging DBus API, enabling these applications to participate in digital living networks. It supports Playstation 3 (PS3), XBox, and many other devices.
mgadvd is a Matrox G200/Zoran 36700 hardware MPEG decoder driver for Linux. It allows you to play MPEG-1, MPEG-2, and DVD streams through the Zoran 36700 Vaddis III decoder (connected to the G200) with very low CPU usage. Supported DVD audio formats are AC3 (Dolby Digital) and PCM. Included is a player app called mzplay that plays DVD directly from the disc as well as MPEG-1 and MPEG-2 video and audio (Layer II only) files.