Welcome to Seven Forums billybob76. Are you sharing these folders on a Homegroup? If not, try this:
Right click on a folder with the lock> Click on Properties> Click on Sharing tab> Click on Advanced Sharing> Untick Share This Folder> Apply and OK your way out. Repeat for other folders.
As for the other issue, are you saying you see duplicate files from your desktop and documents folders in your video folder? It seems that you file paths may be wrong. A Guy