Digital Signage

We need a complete package for digital signage. Basically, the goal is to be able to upload content from our side (server) in order to play in client screens that we're going to provide to a customer. For some detail; -The software must be multi-platform or platfrom-free like adobe AIR. (Something that would work on Raspberry Pi too would be welcome as well. Optional.) -There must be an admin panel for us to control the content we upload. The admin panel should have at least; *Media Timeline/Sequence control for each screen, or groups of screens *Screen on/off controls and screen status indicators. (Online/Offline, malfunctioned etc..) *Screen grouping and batch controls *Content management *Reports and Analysis -The software must work with various media formats. MP4/MOV/Audio/JPG/PNG/Animated GIF/SWF. How some of thes formats will function is an issue for later. -The software should also support simple webpages built with HTML5/CSS3/Javascript or Rss feeds, tweets, facebook posts, instagram pictures.. -Screen dividing and customsation would be welcome as well. (Optional.) -The content will be uploaded generally at night and it should be pre-downloaded by the client machine and start playing at the scheduled time from the harddisk, NOT online or stream. -There must be a client admin panel too which the client can approve a media inserted to the timeline by us to be shown on his screen or not or to see which of his screens are online/offline. A statistics panel could be discussed. -Must be at least in English, Turkish. Other languages could be added too.. Note: The software, as digital signage is a highly delicate matter, must be working perfectly on the client side. Error handling, failures, network problems, connection problems, memory issues must be handled without interrupting the screen/media.