thanks again! But is a flv file a good choice for use with a website which only uses windows media player elements to play videos? I know that the latest version of windows media player can play flv files perfectly but I don't know how to do that is with earlier versions. Of course I don't want to end up in a situation in which visitors with earlier versions of wm player can't view the videos

Also, I want to stream video files so that they can't be downloaded directly but only played on the webpage. I'm currently trying to find out how to this with wmv files. I know how to stream a file and send it to the users local computer (with a restricted bandwidth so that the user can't download the whole movie at once) but I don't know how to play the stream directly on my webpage in my windows media player element. Does someone here know if this can be done using a wmv file or any other type of file (flv file for example?) and which file format should be preferred in this kind of solution?

By the way, I can convert files to flv myself, but thanks for the offer!!