In my case I have to run All-videos on Localhost only - on Joomla 3.3.6. But because JWPlayer needs to see the internet (I think that JWPlayer do some registrations of how often their player is in use and they put on a watermark) my site comes up with the fault-message "Could not load plugins: File not found".
I think that I can get rid of the watermark by going til a paid version - but the registration is still going on... and stops my WEB on localhost from working.

Any suggestions to how I can get around this problem?

/LSH

I am sorry but this aspect of JW Player cannot be changed.
This player needs an active internet connection to function properly.