Once items are in the Recycle Bin, you can remove them from the Mediasite by deleting them.
To delete presentations from Mediasite permanently:
• To delete an individual item, click Recycle Bin in the Content view, select the check box next to the item, and click Delete.
• To remove all items in the Recycle Bin, click Empty Recycle Bin.
CAUTION: Once you delete a presentation from the Mediasite, you cannot recover it and all reporting data for it is permanently deleted. To avoid losing important information, back-up your presentations frequently.