I am trying to setup the rename mask but am running into an issue.
I am trying to get the disk and track number combined at the start of the filenames with multi disks but during the preview (I haven't tried to run it commiting the changes yet), it is adding undefined for multi disc albums.
01undefined02 - The McCoys - Hang on Sloopy.flac
+ ifnotempty(album,' ')
+ '(' + (year.length>4 ? year.substring(0,4):year) +')/'
+ ifnotempty(pad(trackno,2),' - ')
+ ifnotempty(artist,' - ')