Thanks justice, I found that in the end, though i was a bit concerned about modifying the files. Anyway no harm seems to have been done, and it works well for the most part, I'm noticing some GUI problems, the icons are sometimes just shadows, but it still works
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It analyzed 3700 files for me in about 6 hrs on my AMD X2 3800 with 2gb ram , which I thought was a vast improvement over the last time i tried this when it died after about 2 days and still hadnt finished
I am also impressed with its tag fixing ability, so quick and quite accurate, but it does make mistakes so it pays to be careful.