Compilations at end?

[simoncn]

I don't see any good reason for duplicating the ALBUMARTIST tags to ALBUMARTISTSORT (and other xxxSORT tags) when these are identical. This takes more processing time and uses more memory.

There might even be a value in not doing this duplication as it enables the user to see easily where the default sort value has been overridden (by putting the xxxSORT tag in indexTags).