Ok, I'm gonna pull your sweater once more.
Is there a way to organize the grouping process with $if() conditions? For instance, I have vinyl rips, with tags like this : %album artist% %album% %disc% %totaldiscs% %side% %totalsides%. I can add them to the tree, but it always creates nodes even when there's no %disc% or %side% tag. So it's with or without.
Then I tried to bypass the Properties window and add it directly in one of the grouping presets, as well as my usual first grouping parameter, %genre%.
Problem 1 :
When I add the %genre% parameter as the first, it only adds a second %artist% node in the tree. But when I give it "case 2", then it appears at the right place, after %artist% and %album%.pastebin.com/F94e2vAf
Problem 2 :
When I add the %disc% and %side% parameters, it still creates empty nodes whenever there's no %disc% or %side% tag.pastebin.com/7ukj4vCp
I'm not even a beginner in this, but I guess I have to modify something elsewhere. Thanks for the help.