[DaveBlake]

Well since the music library is populated from tags, there is no way for it to know what it hasn't got.

Compare files to what is IN the dB?

What exactly do we compare?
For every file with a music extension there is an entry in the song table? But some files contain more than one song, they have an external or an imbedded cuesheet, so just counting songs doesn't work.

Albums, artists, their roles and and genres are all determined from the tags (nothing about filenames of folders). Other than the tag parsing we have already done I don't see what there is to check.

I think what you want is a way to see what mess your tags produced...

Now, Now, there ......... it's just the classical stuff.

I was speaking personally, maybe all perfect then I give myself a cookie
Usually a random genre spelling creaps in somewhere, or a composer tag is in a different langauge to artist. A quick check is satisfying.

I'll give it a try. Not looking forward to it. The repair of my video dB cockup took 3-4 months. I could die still working on this one.

You'll be fine. Give me a call if you get stuck.