Hola, les escribo con urgencia, pues estoy montando una web que consiste en poner videos de heavy metal de youtube en la web, el sistema que tenia cogia la direccion del flv del video, la enviaba a un reproductor en flash y luego el reproductor la reproducia, todo era perfecto pero el otro dia ya no funciono y creo que el problema es del codigo javascript aunque solo lo supongo, lo que pasa es que no se javascript ademas esta muy desordenado, lo cogi de una pagina web sin modificarlo y no lo entiendo, si alguien me puede ayudar por lo menos a comprender su funcionamiento para ver si lo que hace es coger el flv del video o tiene otra funcion. habra salvado mi proyecto entero, en esta pagina hago las pruebas, pueden ver el ejemplo con videos de metallica: 
http://usuarios.lycos.es/jflog/metallica.html 
Es un archivo llamado SWFOBject: 
Y aqui el codigo: 
/**
 * SWFObject v1.5: Flash Player detection and embed - 
 *
 * SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License:
 * 
http://www.opensource.org/licenses/mit-license.php
 *
 */
if(typeof deconcept=="undefined"){var deconcept=new Object();}if(typeof deconcept.util=="undefined"){deconcept.util=new Object();}if(typeof deconcept.SWFObjectUtil=="undefined"){deconcept.SW  FObjectUtil=new Object();}deconcept.SWFObject=function(_1,id,w,h,_  5,c,_7,_8,_9,_a){if(!document.getElementById){retu  rn;}this.DETECT_KEY=_a?_a:"detectflash";this.skipD  etect=deconcept.util.getRequestParameter(this.DETE  CT_KEY);this.params=new Object();this.variables=new Object();this.attributes=new Array();if(_1){this.setAttribute("swf",_1);}if(id)  {this.setAttribute("id",id);}if(w){this.setAttribu  te("width",w);}if(h){this.setAttribute("height",h)  ;}if(_5){this.setAttribute("version",new deconcept.PlayerVersion(_5.toString().split(".")))  ;}this.installedVer=deconcept.SWFObjectUtil.getPla  yerVersion();if(!window.opera&&document.all&&this.  installedVer.major>7){deconcept.SWFObject.doPrepUn  load=true;}if(c){this.addParam("bgcolor",c);}var q=_7?_7:"high";this.addParam("quality",q);this.set  Attribute("useExpressInstall",false);this.setAttri  bute("doExpressInstall",false);var _c=(_8)?_8:window.location;this.setAttribute("xiRe  directUrl",_c);this.setAttribute("redirectUrl","")  ;if(_9){this.setAttribute("redirectUrl",_9);}};dec  oncept.SWFObject.prototype={useExpressInstall:func  tion(_d){this.xiSWFPath=!_d?"expressinstall.swf":_  d;this.setAttribute("useExpressInstall",true);},se  tAttribute:function(_e,_f){this.attributes[_e]=_f;},getAttribute:function(_10){return this.attributes[_10];},addParam:function(_11,_12){this.params[_11]=_12;},getParams:function(){return this.params;},addVariable:function(_13,_14){this.v  ariables[_13]=_14;},getVariable:function(_15){return this.variables[_15];},getVariables:function(){return this.variables;},getVariablePairs:function(){var _16=new Array();var key;var _18=this.getVariables();for(key in _18){_16[_16.length]=key+"="+_18[key];}return _16;},getSWFHTML:function(){var _19="";if(navigator.plugins&&navigator.mimeTypes&&  navigator.mimeTypes.length){if(this.getAttribute("  doExpressInstall")){this.addVariable("MMplayerType  ","PlugIn");this.setAttribute("swf",this.xiSWFPath  );}_19="<embed type=\"application/x-shockwave-flash\" src=\""+this.getAttribute("swf")+"\" width=\""+this.getAttribute("width")+"\" height=\""+this.getAttribute("height")+"\" style=\""+this.getAttribute("style")+"\"";_19+=" id=\""+this.getAttribute("id")+"\" name=\""+this.getAttribute("id")+"\" ";var _1a=this.getParams();for(var key in _1a){_19+=[key]+"=\""+_1a[key]+"\" ";}var _1c=this.getVariablePairs().join("&");if(_1c.lengt  h>0){_19+="flashvars=\""+_1c+"\"";}_19+="/>";}else{if(this.getAttribute("doExpressInstall"))  {this.addVariable("MMplayerType","ActiveX");this.s  etAttribute("swf",this.xiSWFPath);}_19="<object id=\""+this.getAttribute("id")+"\" classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" width=\""+this.getAttribute("width")+"\" height=\""+this.getAttribute("height")+"\" style=\""+this.getAttribute("style")+"\">";_19+="<  param name=\"movie\" value=\""+this.getAttribute("swf")+"\" />";var _1d=this.getParams();for(var key in _1d){_19+="<param name=\""+key+"\" value=\""+_1d[key]+"\" />";}var _1f=this.getVariablePairs().join("&");if(_1f.lengt  h>0){_19+="<param name=\"flashvars\" value=\""+_1f+"\" />";}_19+="</object>";}return _19;},write:function(_20){if(this.getAttribute("us  eExpressInstall")){var _21=new deconcept.PlayerVersion([6,0,65]);if(this.installedVer.versionIsValid(_21)&&!this.  installedVer.versionIsValid(this.getAttribute("ver  sion"))){this.setAttribute("doExpressInstall",true  );this.addVariable("MMredirectURL",escape(this.get  Attribute("xiRedirectUrl")));document.title=docume  nt.title.slice(0,47)+" - Flash Player Installation";this.addVariable("MMdoctitle",docume  nt.title);}}if(this.skipDetect||this.getAttribute(  "doExpressInstall")||this.installedVer.versionIsVa  lid(this.getAttribute("version"))){var n=(typeof _20=="string")?document.getElementById(_20):_20;n.  innerHTML=this.getSWFHTML();return true;}else{if(this.getAttribute("redirectUrl")!=""  ){document.location.replace(this.getAttribute("red  irectUrl"));}}return false;}};deconcept.SWFObjectUtil.getPlayerVersion=  function(){var _23=new deconcept.PlayerVersion([0,0,0]);if(navigator.plugins&&navigator.mimeTypes.length  ){var x=navigator.plugins["Shockwave Flash"];if(x&&x.description){_23=new deconcept.PlayerVersion(x.description.replace(/([a-zA-Z]|\s)+/,"").replace(/(\s+r|\s+b[0-9]+)/,".").split("."));}}else{if(navigator.userAgent&&n  avigator.userAgent.indexOf("Windows CE")>=0){var axo=1;var _26=3;while(axo){try{_26++;axo=new ActiveXObject("ShockwaveFlash.ShockwaveFlash."+_26  );_23=new deconcept.PlayerVersion([_26,0,0]);}catch(e){axo=null;}}}else{try{var axo=new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");}  catch(e){try{var axo=new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");_  23=new deconcept.PlayerVersion([6,0,21]);axo.AllowScriptAccess="always";}catch(e){if(_23.  major==6){return _23;}}try{axo=new ActiveXObject("ShockwaveFlash.ShockwaveFlash");}ca  tch(e){}}if(axo!=null){_23=new deconcept.PlayerVersion(axo.GetVariable("$version"  ).split(" ")[1].split(","));}}}return _23;};deconcept.PlayerVersion=function(_29){this.m  ajor=_29[0]!=null?parseInt(_29[0]):0;this.minor=_29[1]!=null?parseInt(_29[1]):0;this.rev=_29[2]!=null?parseInt(_29[2]):0;};deconcept.PlayerVersion.prototype.versionIsV  alid=function(fv){if(this.major<fv.major){return false;}if(this.major>fv.major){return true;}if(this.minor<fv.minor){return false;}if(this.minor>fv.minor){return true;}if(this.rev<fv.rev){return false;}return true;};deconcept.util={getRequestParameter:functio  n(_2b){var q=document.location.search||document.location.hash  ;if(_2b==null){return q;}if(q){var _2d=q.substring(1).split("&");for(var i=0;i<_2d.length;i++){if(_2d[i].substring(0,_2d[i].indexOf("="))==_2b){return _2d[i].substring((_2d[i].indexOf("=")+1));}}}return "";}};deconcept.SWFObjectUtil.cleanupSWFs=function  (){var _2f=document.getElementsByTagName("OBJECT");for(va  r i=_2f.length-1;i>=0;i--){_2f[i].style.display="none";for(var x in _2f[i]){if(typeof _2f[i][x]=="function"){_2f[i][x]=function(){};}}}};if(deconcept.SWFObject.doPrepUn  load){if(!deconcept.unloadSet){deconcept.SWFObject  Util.prepUnload=function(){__flash_unloadHandler=f  unction(){};__flash_savedUnloadHandler=function(){  };window.attachEvent("onunload",deconcept.SWFObjec  tUtil.cleanupSWFs);};window.attachEvent("onbeforeu  nload",deconcept.SWFObjectUtil.prepUnload);deconce  pt.unloadSet=true;}}if(!document.getElementById&&d  ocument.all){document.getElementById=function(id){  return document.all[id];};}var getQueryParamValue=deconcept.util.getRequestParame  ter;var FlashObject=deconcept.SWFObject;var SWFObject=deconcept.SWFObject;
Muchisimas gracias