I am trying a procedure involving moving the xml & itx (? sp) files, that
constitute the database, elsewhere, so forcing a rebuild. I found this in
an email from a while back.
The process will probably not work as the new version ITunes goes out into the cloud,
where I do not want it to go, and rebuilds the database based whatever I
bought from the IStore. I've tried reintroducing the original files and this ran
overnight before causing the WIN7 box to die.
If all you have is duplicates & missing artwork, take a look at TuneUp,
it may help you. Althought it is not free, I found that it did a reasonable job.
If I could procure a better version of ITunes, the music librarian, one
that actually performed reasonably I would be a happier human.