When a media clip contains video, the image appears in a Video Screen within the Presentation area. If there is no video content and the Visualizations option is enabled, an animated visualization of the audio appears instead.

Learn more about Visualizations.
 

Related Information is included with some streaming media clips and is supplied by the content provider. When Related Info is included, it appears to the right of any video content (video screen or visualization display).

Learn more about Related Info.
 

The process of breaking a large media file (audio, video, etc.) into smaller pieces and transferring it, piece by piece, so it can be viewed immediately rather than waiting for the whole file to be downloaded. (See Streaming Media Basics.)