OpenBSD NC4200: Getting vlc-web plugins to be listed in Firefox

I installed vlc-web package but it's not listed in my Firefox's plugin list. After searching fer a while, I found that the plugin's directory is locked to root only. So I chmod the directory:

sudo chmod 774 /usr/local/lib/mozilla

After restarting Firefox, the plugin is now listed. I'll try and find a video to play and see the outcome.