Files with nbm file extension might also be found as old archives from Guy's Power Albums software.
There is one other file type using
the NBM file extension!
.nbm - NetBeans module
NBM file extension - Guy's Power Albums archive
What is nbm file? How to open nbm files?
File type specification:
The nbm file extension was also reported to have been used in some old program called Guy's Power Albums. Music management software. Archive format.
Most likely some old format without support. No further information could be found.
This nbm 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.