Hello,
I have several album with doubled taging - in ARTIST and TITLE fields.
Please look at the attached file.
I would like to remove Artist from TITLE and Title from ARTIST fileds - red lines on the picture,
and then make Tag - Filename function.
Please help how to make it, with Regular Expression ?
Many thanks in advance,
ViValdimar
Oh, so many ways lead to rome .... 
there are at least two alternatives:
you can use the converter tag-filename right now and write only %title% or only %artist% and then use the converter filename-tag with the mask %artist% - %title%.
Or you apply an action of the type "Import tag fields" (Guess values) for either %title% or %artist% and enter the maske %artist% - %title%.
Then use the converter to get the filename right.