Basic error in numerical sorting of album names

[DavidL]

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If you are transferring a custom-sorted library from iTunes, the files might already have the necessary ALBUMSORT tags in place. If this is the case, you would need only to follow the instructions in the post that you referenced (with the exception of step 3).
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Thanks for the help.

Before following your advice I investigated further and discovered that file structure on my Synology NAS mirrored exactly the 'errors' I described in my first post, whereas the file structure of the original library on a Mac that I'd copied to the NAS was 'correct'. Weirder still playing back the library on the NAS via iTunes I got the correct ordering of albums. Thus the iTunes player sorts out the correct order of albums.

I'm now wondering whether the file sorting on the NAS is the source of my problems so I've posted accordingly on the relevant Synology forum.

David