Well, I worked out how to change preferred applications in Firefox, I changed wmv preferred application from gecko to (movie player or vlc) and then I was able to play the wmv movie sent to me in full size and full screen. Also, on a certain website, it has listed a few ways to get their live tv on internet video, including Flash at 100, 300, 500K, and Windows media player. Depending on which of the flash choices I choose, some will be small, some will go to full size. I don't quite understand it all, but I don't need to, as long as I can choose one that works which I now can.
For Windows media player, alas, I changed that preferred application to vlc but that has not changed thus far........perhaps after a restart?
Thank you all for your help, you gave me info and ideas to try which helped me get to where I am.
PS- Thank you to the Linux Mint 7 developers, it is a great program!