You just type $v=new w3v(filename.ext) and the class depending upon the extension creates on your website one player or another(jwplayer, divxplayer). It recognize virtually every file format, even youtube.
It's opensource
A simple PHPfile-manager/-browser (file-upload/select/delete ...), usable as plugin for TinyMCE or other wysiwyg's/application's, Including a cross-browser safe "Windows Explorer" style and free icons, for installation just upload a SINGLE phpfile.