After much work in Windows Explorer, I now have all my music (with no dups) in two locations:
C:\Bill\MyMusic\iTunes\iTunes Media\Music
F:\iTunes Media\Old Music
I deleted the following files and folder as you directed:
iTunes Library.itl
iTunes Library.xml (or iTunes Music Library.xml)
iTunes Library Extras.itdb
iTunes Library Genius.itd
Album Artwork
I uninstalled iTunes, downloaded iTunes 12 and installed it.
Question #1 - did the install of iTunes 12 reinstall the files deleted above, and if so where did they install? When I search on "iTunes Library.itl" I don't find a file with that exact name. I do find "iTunes.exe" in the "Programs" folder.
When I try to open iTunes, I am asked to select or create a library. When I choose "create" I get a window called New iTunes Library which shows Music Library and notes that it includes 5 locations -- My Music and 4 other locations.. Three of these other 4 locations don't exist - at least I can't see them in Windows Explorer, and this New iTunes Library window notes:
this folder is unavailable next to these three entries. The first of these unavailable locations is
C:\Users\Bill\Desktop\Music to Trash
In the New iTunes Library window, when I enter a new name for the new library location (e.g. New Library) and click Save, iTunes returns an error message:
C:\Users\Bill\Desktop\Music to Trash\New Library does not exist.
Question #2 - do I need to get rid of these three unavailable locations listed under Music, and if so how do I do it if I can't see them in Windows Explorer?
Question #3 - what do I do next - how do I create New Library under My Music
Question #4 - what folders does iTunes require - iTunes\iTunes Media\folder name?
Thanks for your patience and your help
Bill