In Windows 8 all of my music files are duplicated.Please help.
1.Log in as Administrator.
2.Make sure that WMP is closed.
3.Go to c:\Users\YOUR USERNAME\AppData\Local\Microsoft\Media Player.
4.Locate the CurrentDatabase_400 wmdb file and delete it.
5.Once the wmdb file has been deleted, restart Windows Media Player and the database should begin to repopulate.
[AppData is a hidden file,so You need to go to View >Options > Click View in Folder options >Select Show hidden files,folders and drives>OK/Apply ].
Third party tools to resolve this issue:-
Auslogics Duplicate File Finder
easy duplicate finder
Duplicate File Finder Software (images, mp3, iTunes, emails)