Solution 2:
-
Step: Put each chapter in an extra folder:
Tag - Filename Converter: %title%\%_filename% -
Step: Give new tracknumbers with the Autonumbering Wizard:

choose "Leading zeros for tracknumbers" and "Reset counter for each directory" -
Step: Put the new tracknumber into the title:
Action: Format Value
Field: TITLE
Formatstring: %title% (%track%) -
Step: Put the files back to the original folder:
Action: Format Value
Field: _DIRECTORY
Formatstring: .\ -
Step: Use the Autonumbering Wizard again to restore the old tracknumbers.