A cover and description can now be set for media shows by the movie info and will be shown in the MediaCenter.
Also the automatic creation of QuickTime movie previews is now available in the movie info. Available on user request since some QuickTime movies need time to show the preview in the MediaCenter.
Please note that for DVDs it can take also time to show a cover - this can be influenced by the MediaCenter preferences: as more providers will be used to find a cover the more time it can take.
The ARD-Mediathek videos are now available again in the MediaCenter.