I have Jmovies installed and am trying to get the trailer feature working; it says to installed Allvideos plugin in which I have.  In the options for jmovies it is suppose to work with allvideos by inputting the filename of the video itself and specifying the heighxwidth, etc of the video.  However, when attempting to play a flv file through jmovies; it gives the error of: Sorry, the file loaded cannot be viewed.

I am wondering if this is a problem with allvideo or if it is a problem with jmovies.  I have no been able to figure anything out from jmovies, so im hoping that I will be able to figure out why its not working. 

Thanks for any help.