Hi, not at the moment Ive raised http://jthink.net:8081/browse/JAIKOZ-774 but you could work round it as follows.
The Artists column stores multiple artists as multiple values, with the main artist normally the first value, so the following procedure replace the artist value with the first value in the artists field, then check we are not left with any empty values, however it doesnt add the featured artist to the song title.
Start Jaikoz
Make sure Artist and Artists columns are shown
Drag the Artists column so it is next to (to the right of ) the Artist column
Right click on Artist column and select Empty Column
Select fields in both columns and select Edit/Append to Left
Sort Artist column
If there are any empty fields select those fields
Right Click, Edit/Undo Changes
Save Changes.