how can i play media file that on some web site by mozilla on my N900?
i used to install this add name media wrap on my pc and it work. https://addons.mozilla.org/en-US/firefox/addon/1879

Any chance you can change the title so its related to the question

anybody know?

That add-on won't work for MicroB or Mobile Firefox as it's just a wrapper for Windows Media Active-X (which doesn't work in N900)

so what should i do please help me.

Please don't beg. You are a grown person (hopefully), and people are not going to answer for very long if you keep this plead of despair up. You're here to get help, indeed, but you need to earn help. Show that you're trying.

MediaWrap (the plugin for Firefox) is not available for the N900, and will most probably never be. Rather than explaining what Add-on you want, it may be more helpful to explain what you are trying to achieve?

Yes, you said you wanted to play media files, but maybe you could show an example, and some of us may use our N900 to see if we can play it, or come up with a solution for you?

Please, don't be begging for help. There's nothing more insulting.

You can't play window media files on the n900.

You should access the site with a windows browser.

What site are you trying to access? A url to (non-p0rn, non-illegal) content would really help us to figure out if the answer is "sometime soon" or "never".

Actually you can play .WMV files on the N900, just not streaming windows media. So, if you are able to download the stream as a .WMV to the device, you may be able to play it with the built-in media player.