Plex bridges the gap between your Mac and your home theater, doing so with a visually appealing user interface that provides instant access to your media. Plex can play a wide range of video, audio and photo formats as well as online streaming audio and video. The real power of Plex is found in its library features: Organize your media into versatile libraries, automatically retrieve metadata from the Internet, and display your libraries using one of the visually stunning skins.
The latest beta version of Plex adds many more features but is considered a beta program. New features include the Plex Media Server, online video (including Hulu, TED, CNET, Revision3, and more), full iTunes Music support, iTunes DRM Playback, iTunes Visualizers, and Sparkle Updates. Although its considered to be stable, users should note that their may be bugs and features and functionality are constantly changing.