We know that Adobe Flash technology is all over the Web and is an example of how Internet video has finally arrived after overcoming many technological hurdles during the past decade. Many people make use of this and put their video to the Internet with flash video player. And I think many other people might want to do so as well.
To make a web flv movie player for website, you can use Adobe Flash CS4, which is a commercial software and a little expensive (nearly 1 thousand dollars). Further more, to make flv player highly customized using Adobe Flash CS4, users must have knowledge and experience on ActionScript, which is a computer programming language. So it will be a little complicated to newbies.
There is also other low cost way to make web flash video player without coding.
This tool, called Moyea web player, which is free. It can do this and make kinda easy to build a custom flash video player to show off the Flash Video (.FLV) movies.

Posting this just for fun and sharing. Hope it helps