- Copy all episodes to a folder
- Start MP3Tag and point it at the folder
- Add the "extended" tag "releasetime" to every file with any value, such as "1234"
- Make sure the episodes are named such that they are in the correct order of desired play
- Create a CSV file with ascending values from 1 to the # of files in column A
- Use the import from file tool to set "releasetime" to the values in the CSV file
- Drag the doctored episodes into iTunes
Note that the values will not display a time in iTunes (wrong format) but the episodes will sort correctly