ubun2

Totem video player i.e the default gnome video player should be able to play .wmv / .wma video files.
If still not playing run the following command
 
sudo /usr/share/doc/libdvdread4/install-css.sh

this will install and enable to play dvd's.
Ubuntu adds formats like wma, wmv, quicktime, etc to restricted formats due to their license restrictions. run the following command in a terminal which enables support for restricted formats
 
sudo apt-get install ubuntu-restricted-extras

Hope this helps.