Código Javascript :
AC_FL_RunContent( 'codebase', 'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0', 'width', "1600", 'height', '150', 'src', 'content/swf/WaveFormPlayer', 'quality', 'high', 'pluginspage', 'http://www.adobe.com/go/getflashplayer', 'align', 'middle', 'play', 'true', 'loop', 'true', 'scale', 'showall', 'wmode', 'window', 'devicefont', 'false', 'id', 'content/swf/WaveFormPlayer', 'bgcolor', '#ffffff', 'name', 'content/swf/WaveFormPlayer', 'menu', 'true', 'allowFullScreen', 'false', 'allowScriptAccess','sameDomain', 'movie', 'content/swf/WaveFormPlayer', 'salign', '', 'flashvars','playlist=include/playlist.php&textColor=0xffff00&backgroundColor=0x333333&waveColor=0xffffff' ); //end AC code
He tratado colocándole 100% a width pero no chapa el 100% de la pagina