By far the best version.

I just released an awesome set of PHP functions that work with my FLV player. Now embedding the player and integrating it into dynamic websites is really easy. It also has functions to get the height and width from an flv file, and to embed regular swf files.

By request, I have released a version of the FLV player for Flash 8. This version isn't as polished as the version for CS3, but might be useful for those who only have Flash 8, or for anyone trying to support versions of Flash player older than 8. You can download the Flash 8 version here.