An agm file extension is related to the DTS Multi-channel Pro Packer and used for its audio data files.
AGM file extension - DTS Multi-channel Pro Packer data
What is agm file? How to open agm files?
File type specification:
The agm file extension is associated with the audio file format developed by DTS (Digital Theater Systems).
The agm file stores audio, that is encoded by DTS Pro Series Surround Encoder.
This agm 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.