javax.media.NoPlayerException: Cannot find a Player for:
file:/C:/Users/Public/Videos/Sample%20Videos/Wildlife.wmv
WMV is not listed anywhere in the JMF 2.1.1 - Supported Formats. A 'quick and dirty' test for any media is to load it into the JMF default player. If that player won't load it, neither will any other JMF based app.
I have a page that offers some JMF compatible media that you might choose to test your app. with.
JMF is very old, and has little support for newer formats. If you can convert the video to a format JMF can read, it is fine at playing it, but it is not suited to being a generic 'media player' at this point in time.