Yes, it is possible to view all items in a category (Folder, Images, Videos, Audie, Documents, or URLs) without navigating the folders structure in the Media Manager

• In the Media Manager
• First, turn off the folder view if it is active
  • Either click on the folder view icon in the upper right
  • or Click on the left arrow at the top of the folder list
    
• Then select the category of items you want to browse through