For most Linux desktop environments, you should be able to double-click the `.x86_64` file and confirm to the OS that you would like to treat this file as an executable.
If your desktop environment isn't handling that, you can do the following to make the file executable to your OS. First, open a terminal at the location where the files are (or navigate to it from your terminal). Then use this command:
chmod +x PNGTUBER\ PLUS\ 1.4.5\ LINUX.x86_64
The `chmod` tool should be available in any Linux distro worth anything. The `+x` option is "make executable". And also note that all the spaces in the file name have been escaped with backslashes.
Update the command as needed for different file names (future updates).
