Hey, a make a module.
The purpose of this module is to update the title and/or author sorting key, like the options in the Bulk Metadata dialog, options that are unavailable via Action Chains (I won't open the huge Bulk Metadata dialog just to check the same 2 options everytime => go on to make a non-interactive module).
I remember you had created a thread to reference different user modules (and other event managers), but I couldn't find it.
If it exists, it would be nice to have an explicit link in the description (so that we can look for it before breaking our heads to do things ourselves, especially if we don't understand anything in code)
Here is the code of the module:
EDIT: code moved into the dedicated thread