Notes about the 668 file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The 668 file type is primarily associated with 'Music File'. Music file with mixing always at 12048Hz.
Detailed information for file extension 668:
Primary association: Music File
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.
To view technical data on file-extension 668 click this link
to expand/hide the additional area.
System Info for File Extension .668
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly
from user systems.
EXEFile: %ProgramFiles%\ptc\proeWildfire 3.0\bin\proe.exe