Move "Featuring" from Artist to Title

[DetlevD]

@M3Rocket

... 1. I want to standardize all the different capitalizations/versions of Ft., Featuring, FT, feat, etc. and standardize it to "feat." in the title.
2. I want to copy the featured artists from the Title and add it to the Artist field separated by ";" but make sure the primary/album artist is listed first. ...

1. Action "Format value"
   Field: TITLE
   Formatstring: $replace(%TITLE%,'(ft ','(feat. ','(featuring ','(feat. ','(FT ','(feat. ')

2. Action "Format value"
   Field: ARTIST
   Formatstring: %ARTIST%[';'$replace($regexp(%TITLE%,'^.+?\(feat\.\s(.+?)\)$','$1'),' & ',';')]

DD.20160603.1240.CEST