Hi, I've been using Mp3Tag a long time, and I really love this software.
I'm grad that this is and open-source-project and I have a suggestion about classifying folders in to sub directory according to custom metadata that user have configured.
Here's a picture that represents the example of the function I'm suggesting.
PS : I'm sorry if you didn't understand what I was saying. 
I don't speak English very well.
Mp3tag is NOT open-source.
Only the developer @Florian decides if a suggestion or a feature request will be implemented.
The community can help you to achieve what you like.
oh, It seems I had a misunderstand.
thanks for the comment.
As a long time user you know that you can already rename your files and folders with the existing possibilities like:
wow, It seems the function I was thinking of is already in Mp3Tag!
I didn't know that. Thanks for telling me the function I haven't used before.
