Abstract: A method and apparatus for back-end processing a recordable media production job after it has been generated and sent to a recordable media production system is described that intercepts the image file generation at a low level within the recordable media production system and allows for adding, deletion and modification of the underlying data files and/or modification of the production job itself under control of an external user defined process, such as an application, DLL, script or plug-in. This interception of the image file generation occurs before the final image is assembled and handed off to the media recorder/producer to be written to the recordable media and is invoked at multiple stages of reading the production job edit list, allowing changes to occur at each stage of the imaging or pre-mastering (file system creation) process.