Beginner with question on my rss feed error

Hi, I have a question as to why I get this error on my feed:

XML Parsing Error: XML or text declaration not at start of entity
Location: http://golfingtip.org/golfmagazine/?feed=rss
Line Number 2, Column 1:<?xml version="1.0" encoding="UTF-8"?><!-- generator="WordPress/2.7.1" -->
^

The URL is http://golfingtip.org/golfmagazine/?feed=rss

Alternately, when I try to make a feed with feedburner I get this:

The URL does not appear to reference a valid XML file. We encountered the following problem: Error on line 2: The processing instruction target matching "[xX][mM][lL]" is not allowed.

The only xml type file I see in my upload folder I FTP'd is this. Here is the code: ( I couldnt post all of it because of max character limit for this forum)

Any help would be greatly appreciated

<?php
/**
* XML-RPC protocol support for WordPress
*
* @license GPL v2 <./license.txt>
* @package WordPress
*/

/**
* Whether this is a XMLRPC Request
*
* @var bool
*/
define('XMLRPC_REQUEST', true);

// Some browser-embedded clients send cookies. We don't want them.
$_COOKIE = array();

// A bug in PHP < 5.2.2 makes $HTTP_RAW_POST_DATA not set by default,
// but we can do it ourself.
if ( !isset( $HTTP_RAW_POST_DATA ) ) {
$HTTP_RAW_POST_DATA = file_get_contents( 'php://input' );
}

// fix for mozBlog and other cases where '<?xml' isn't on the very first line
if ( isset($HTTP_RAW_POST_DATA) )
$HTTP_RAW_POST_DATA = trim($HTTP_RAW_POST_DATA);

/** Include the bootstrap for setting up WordPress environment */
include('./wp-load.php');

if ( isset( $_GET['rsd'] ) ) { // http://archipelago.phrasewise.com/rsd
header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
?>
<?php echo '<?xml version="1.0" encoding="'.get_option('blog_charset').'"?'.'>'; ?>
<rsd version="1.0" xmlns="http://archipelago.phrasewise.com/rsd">
<service>
<engineName>WordPress</engineName>
<engineLink>http://wordpress.org/</engineLink>
<homePageLink><?php bloginfo_rss('url') ?></homePageLink>
<apis>
<api name="WordPress" blogID="1" preferred="true" apiLink="<?php echo site_url('xmlrpc.php') ?>" />
<api name="Movable Type" blogID="1" preferred="false" apiLink="<?php echo site_url('xmlrpc.php') ?>" />
<api name="MetaWeblog" blogID="1" preferred="false" apiLink="<?php echo site_url('xmlrpc.php') ?>" />
<api name="Blogger" blogID="1" preferred="false" apiLink="<?php echo site_url('xmlrpc.php') ?>" />
<api name="Atom" blogID="" preferred="false" apiLink="<?php echo apply_filters('atom_service_url', site_url('wp-app.php/service') ) ?>" />
</apis>
</service>
</rsd>
<?php
exit;
}

include_once(ABSPATH . 'wp-admin/includes/admin.php');
include_once(ABSPATH . WPINC . '/class-IXR.php');

// Turn off all warnings and errors.
// error_reporting(0);

/**
* Posts submitted via the xmlrpc interface get that title
* @name post_default_title
* @var string
*/
$post_default_title = "";

/**
* Whether to enable XMLRPC Logging.
*
* @name xmlrpc_logging
* @var int|bool
*/
$xmlrpc_logging = 0;

/**
* logIO() - Writes logging info to a file.
*
* @uses $xmlrpc_logging
* @package WordPress
* @subpackage Logging
*
* @param string $io Whether input or output
* @param string $msg Information describing logging reason.
* @return bool Always return true
*/
function logIO($io,$msg) {
global $xmlrpc_logging;
if ($xmlrpc_logging) {
$fp = fopen("../xmlrpc.log","a+");
$date = gmdate("Y-m-d H:i:s ");
$iot = ($io == "I") ? " Input: " : " Output: ";
fwrite($fp, "\n\n".$date.$iot.$msg);
fclose($fp);
}
return true;
}

if ( isset($HTTP_RAW_POST_DATA) )
logIO("I", $HTTP_RAW_POST_DATA);