After a little test run--my idea did work. I simply created a new field called "Episodes" with the "List" type and Default Search field enabled. Now, by searching for a show name, a DVD where I entered the show name will appear. I can almost see simply using the built-in Keywords field and then adding episodes or full movie/show quick summaries. With quick summaries on movies and shows, people could search for a lot of different types of things to get stuff.
But is there a way to preserve the Episodes of Keywords field in the tags? Can ANY tags be written to DVD files? If not, can J River please add this ability? Writing directly to the files would not be a great method because that's a lot of data to edit (1GB on each file) and each DVD consists of a lot of files.
Could you add some XML file that would store field info?
Lastly, now I wonder if there is a way to view the Episodes field for instance. Can view schemes help here? Ideally, after selecting a show name it would list episodes or if a user clicks All, then it would go to the discs. The episodes would SIMPLY point to the DVD disc. I doubt it could be setup to point to the correct title in the DVD...but that would be amazing.