That was what I was afraid of. Very tedious. There also is remove duplicates in the drop down menu's in smart list. Does that also work the same way. At some point I must have duplicated the same music from different hard drives. I have duplicates in the 1000's. It will take along time to click and delete. Thanks for your understanding and help!
Well, maybe you can find some shortcuts that can help. Look at the different file properties (Action Window > Tag) and see if there are certain fields, such as Date Created, Filename (path), or audio compression type, or quality, or something that helps you automatically select (by sorting) one over the other. If so, then you can select many at once.
The Remove Duplicates Of modifier would be useful to show only one of anything that was matched by previous criteria (eg. higher in the order of the list of rules and modifiers).
For example, the smartlist:
[Media Type]=[Audio] ~dup=[Album],[Artist],[Name]
would find all titles that were duplicated (considering only the album,artist,name trio). Add ~nodup:
[Media Type]=[Audio] ~dup=[Album],[Artist],[Name] ~nodup=[Album],[Artist],[Name]
would then remove all duplicates, leaving only one track for each dup matched from the previous modifier.
It is important to note that the single duplicate that remains from the above rules/modifiers is *randomly chosen*.
If you ran this smartlist several times, deleting a set each time, it would winnow out your duplicates (again, based only on album,artist,name, and as I've mentioned, I have loads of albums where that trio would not be sufficient to select duplicate tracks, as the albums have one ore more of the same track name on the same disc of the same album).
Anyway, hope this helps.