EasyWMV error


So I tried easyWMV because I want to convert all my windows avi and wmv files into itunes library for simplicity and all I get is a red dot with "error"

what the heck does that mean? and there is no help... what's the easiest way to convert/play wmv into iTunes on my mac? I really just want an automated program.. hence why I checked out easyWMV..

thanks everyone