WMV in Firefox

I’ve been looking for a Mozilla Firefox plugin that can play streaming WMV sound and video files. I’d like to use the VLC plug in but, it doesn’t appear to work on these types of files. The file comes up blank and if you click were the file would be on any other browser, it just says “Video loading” but never loads.

I know the Mplayer plug in can play these files but, if you switch tabs or minimize the window, the file stops playing!

I could use the Opera browser but, I prefer firefox best. Which plugin works best for these files?

I use xine plugin and used mplayer plugin before. As far as I can tell,playing a file depends on the site and type-version of wmv you need to watch each time