It's the differences within collections that need fixing. If compilation track files are named with inconsistent artist names, for instance, they become harder to browse on your hard disk and so more difficult to administer and, potentially, listen to.
How should the files in 'Various Artists' compilation albums be arranged, then? The first step is that the file and directory names should be based on the tags located within the music files themselves, and when the tag changes, so should the file name or file structure.
The next step is to work out how you want the 'album artist' to appear for compilation albums. You could choose 'Various', 'Various Artists' or whatever (depending on your language of course!) but the important thing is that this applies consistently across your entire music library. The text you choose should be applied to the 'ALBUM_ARTIST' tag within your music files.
Once all your compilation albums have the same ALBUM_ARTIST tag, it's time to work out how this is applied to your file structures. Somewhere in your file structure you will probably have the artist name. A 'pattern' for the file organisation may be:
/[album artist name]/[album name]/[track name].mp3Or
/[album artist name]-[album name]/[album artist name]-[track name].mp3Wherever '[album artist name]' appears, your chosen artist name tag should appear.
The final decision to make is how to treat capitalisation and whitespace. The latter only matters if you choose an artist name with whitespace, for instance 'Various Artists'. Assuming you did choose 'Various Artists', how capitalisation and whitespace is treated would give you the following differing example file structures:
|Title case, allow spaces|
/Various Artists/My Compilation/Intro.mp3
|Lower case, replace whitespace with underscores|
The keyword for managing music files is consistency. Consistency of how the artist for each compilation album is named, and consistency in how you treat capitalisation and whitespace when applied to file structures.
I wish you luck!
Thanks to Mulad for the image at the top of this article