.hco is Macintosh sound resource fork
Key Features: .HCO File Extension
|Category||Audio and sound|
What is an .HCO file?
The hco file extension is associated with the old versions of the Mac OS. The hco file contains sound.
Most likely some old format without support. No further information could be found.
This hco 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.