I too am interested in the duplicate finder's capability, but haven't committed to purchase just yet because it doesn't have an auto tagger. Not saying I won't buy eventually, but I would have done it right away if it had one. I understand the issues with multiple possibilities for missing tags, but I would rather have the potential for incorrect tag data than a blank in my library. Besides most of the time it would be close enough. If the song was on the original and the compilation, I don't care which one it puts in the album tag, but one would be nice. Also, the concept of automatically going through and deleting duplicates comes with some risk of error, we accept that because of the ease. I think many of us would accept the risk of a few tags being wrong (and indeed the amount of wrong it introduces may be an acceptable trade of for the ones that it fixes that are already wrong).