Music in several places. Help!

I have just checked and I have iTunes music in several places:
/Volumes/External Disc/iTunes/iTunes Media/Albums in Folders
/Volumes/External Disc/iTunes/Albums in Folders
/Volumes/External Disc/Music/Albums in Folders
/Volumes/External Disc/Albums in Folders

I think this is probably because of the length of time I have been using iTunes and the changes in location it has made. I have all the boxes ticked in preferences:
Keep iTunes Media folder organised
Copy files to iTunes Media folder ...

How can I get iTunes to move all the Music to one place? Does Consolidating them move them?

Many thanks in anticipation of your assistance.

Patrick

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