[DarkLaguna]

@niceboy;

You can use

{tags}/{author}-{title}

which will generate a folder, with the tag as a name, and in which you'll have the Author - title.mobi file.

I think however, it'll make more sense to use

{tags}/{author_sort}/{title}

since this will keep the files inside categories of the Author names. Also, the file name displayed in the Kindle itself would only be that of the title, and the author from the metadata, which is aesthetically better.