Music file organisation

[Fragoulisnaval]

What a tagger does, is that it writes the metada at the end of the flac file, so there is no way that you will spoil/destroy the audio part. In your case, I would suggest trying musichi tagger.

http://www.musichi.eu/index.php/en/buynow

It has a 30 day trial period and is the best tagger there is. You can:
1) Through Amazon, you can find the album and automatically get the metadata. This is a two step process, the socend being the final confirmation, in case of doubt
2) You can use the Musichi Library, especially If you are into classical, where the metadata have almost ever album there is
3) You can use the GD3 service, which also has an extensive catalogue from where you can find the metadata
4) You can Create metada from the folder structure in case you cannot find your album going through the above possibilities.
5) You can even create your own metadata fields for extra info, if you want.

This way, there is virtually no chance of having something that does not exist already and slowly you will sort your library out.

I have a large collection of more than 5000 albums and through musichi everything is in perfect shape.