Sorry, I've made some minor corrections.
This is the more accurate picture of the structure of my iTunes folders (after re-organizing):
THE ACTIVE DIRECTORY .itl is the sixth up from the end
X:\iTunes\
Album Artwork
Cache (folder containing folders and subfolders)
Download (folder containing folders and subfolders)
Local (folder empty)
Automatically Add to iTunes
iTunes Media (folder empty)
Automatically Add to iTunes
iTunes Music
Artist 1
Album 1 (folder empty)
Album 2 (folder empty)
Album 3 (folder empty)
Artist 2
Album 1 (folder empty)
Album 2 (folder empty)
Album 3 (folder empty)
Artist 3 etc.
Audiobooks
Author 1
Chapter/Episode
Author 2
Chapter/Episode
etc.
Music
Artist 1
Album 1
Audio file
Artist 2
Album 1
Audio file
Artist 3
Album 1
Audio file
Podcasts
Programme 1
Audio file 1, Audio file 2, Audio file 3, etc.
Programme 2
Audio file 1, Audio file 2, Audio file 3, etc.
Programme 3
Audio file 1, Audio file 2, Audio file 3, etc.
etc.
Previous iTunes Libraries
Album Artwork
Cache (containing folders and subfolders)
Download (folder empty)
iTunes Media
Automatically Add to iTunes (folder empty)
Downloads (folder empty)
Podcasts (folder empty)
Previous iTunes Libraries
iTunes Library (date).itl
iTunes Library (date).itl
iTunes Library (date).itl
iTunes Library (date).itl
iTunes Library (date).itl
iTunes Library (date).itl
iTunes Library (date) Genius.itdb
iTunes Library (date) Genius.itdb
iTunes Library (date).xml
iTunes Library (date) Extras.itdb
iTunes Library (date).itl
iTunes Library (date).xml
iTunes Library (date) Extras.itdb
iTunes Library (date) Extras.itdb
iTunes Library (date) Genius.itdb
iTunes Library (date).xml
iTunes Library (date).itl
iTunes Library (date) Extras.itdb
iTunes Library (date) Genius.itdb
iTunes Library (date).itl - ***ACTIVE LIBRARY***
iTunes Library (date).xml
iTunes Music Library.xml
Temp File 1.tmp
Temp File 2.tmp
Temp File.tmp
iTunes Media folder location (as shown above):
X:\iTunes\iTunes Music