I’ve been having problems with Firefox v2.0 and WMV files. Everything it comes across one it keeps throwing a fit and complaining about “Missing Plugins”. When you try to get the plugin it needs it tries to download Windows Media Player, but I KNEW I had the latest version. Turns out it’s a known issue in FireFox 2.0 and there’s a workaround you can implement here. If you have the same problem, check it out.