Notes about the MUX 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 MUX file type is primarily associated with 'Trackmania' by NADEO. A car-racing, track building game. You can add sounds if they are in the .OGG format (use the free program Audacity to convert MP3 and WAV to OGG format). Then, open the Trackmania launcher, go to Help | Custom Data | Convert Music.
Detailed information for file extension MUX:
File classification: AudioIdentifying characters
Hex: 4E 61 64 65 6F 46 69 6C 65 01 , ASCII: NadeoFile
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
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.