Glitch in 'Open with...' I want to change all media apps to open with VLC.

So I right click on one, get info, open with:

But now this:



And I only have one VLC on my system:

ps-MacBook-Air:~ pi$ sudo find / -iname "VLC.app"
/Applications/VLC.app

Is this a microscopic bug?

And who is at fault? I suspect maybe VLC needs to register somewhere as a media player and maybe it has registered twice?
This is a well known bug in LaunchServices.

You need to rebuild the database using this command: 

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain user;killall Finder;echo "Open With has been rebuilt, Finder will relaunch"


then

killall Finder


Once you have done that you will only have one entry for each application.

Here is the command split onto multiple lines 

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/\
LaunchServices.framework/Versions/A/Support/\
lsregister -kill -r -domain local -domain user


(Notice the \ characters that allow a command to stretch across physical lines in bash.)