Files with di extension were associated with old Pinball games as an audio format.
There is one other file type using
the DI file extension!
.di - D Programming Language source code
DI file extension - Digital Illusion audio data
What is di file? How to open di files?
File type specification:
The di file extension was used for a Digital Illusion Format created by The Silents, an audio format tha was used in old games like Pinball Dreams (1992) or Pinball Fantasies (1993).
This di file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.