I have found the following information on MediaViewers add on: http://code.google.com/p/share-extras/wiki/MediaViewers. I have installed it. I can see the modules in the deployment page. I'm not sure what ones I really need to install, I am also unclear about the ones that are called xxx.configuration. Where do you see those pages? I can't seem to locate the correct documentation. I have installed media-viewers-2.5.1.jar. PDF's seem to work, audio files work, most graphics work. I need to add support for TGA, Tiff and perhaps native Photoshop files (PSD)
I'm also having issues with FFMPEG previews. But I will open a separate thread on that.
Can someone point me to more documentation on this mediaviewer packages.