You will have to clarify your question I'm afraid. As it stands now, I'm not even sure that's a sentence, let alone what it is you are trying to say.
So you downloaded Xine, that's a good first step in getting windows media files to work on your machine, but you left out a lot of crucial detail.
What version of Xine is it?
Did you download a source tarball or a binary package?
If you downloaded a binary package, what format was it? (RPM, apt etc...)
Now as for "uploading the plugin" that just doesn't make sense. Uploading a plugin means you sent a plugin to another machine... I assume you meant to say you *downloaded* a plugin. What you are leaving out is what it's a plugin for???
Is it a browser plugin (I'm assuming what you want to do is watch windows media files from your web browser in Linux - so I'm assuming you are referring to having downloaded a plugin for some browser...)
So, what is the plugin you downloaded?
What browser is it for?
Did you actually install it?
You then go on to say "all the folders were debian related"... what folders? The folders from the Xine install? The folders in some archive you downloaded? More info please.
Now as for what I think you're asking, which is how to get windows media player files to play from your browser, all I had to do was associate xine with *.asf and *.wmv files in my browser (firefox) and tell it to open them when clicked instead of downloading them. Now they all play fine.