See if this helps:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [
  <!ENTITY nbsp "&#x00A0;">
]>
<xsl:stylesheet
    version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxml="urn:schemas-microsoft-com:xslt"
        xmlns:msxsl="urn:schemas-microsoft-com:xslt"
        xmlns:wm="urn:writemedia-com:xslt"
    xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets"
    exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">


  <xsl:output method="xml" omit-xml-declaration="yes"/>

  <xsl:param name="currentPage"/>
  <xsl:variable name="max">
    <xsl:choose>
      <xsl:when test="/macro/max != ''">
        <xsl:value-of select="/macro/max" />
      </xsl:when>
      <xsl:otherwise>5</xsl:otherwise>
    </xsl:choose>
  </xsl:variable>

  <!-- start writing XSLT -->
  <xsl:template match="/">
    <xsl:variable name="xmlcontent" select="wm:getRSS()" />
    <ul style="list-style:none;">
      <xsl:apply-templates select="$xmlcontent/rss/channel/item" />
    </ul>
  </xsl:template>

  <xsl:template match="item">
    <xsl:if test="position() &lt; number($max)">
      <li>
        <h3>
          <a href="{link}" target="_blank">
            <xsl:value-of select="substring(pubDate,1,16)"/> - <xsl:value-of select="title"/>
          </a>
        </h3>
      </li>
    </xsl:if>
  </xsl:template>

  <msxsl:script language="C#" implements-prefix="wm">
    <![CDATA[

        public System.Xml.XmlDocument getRSS()
        {
            try
            {
                System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create("http://www.localendar.com/public/cardiffbrass?style=D4");
                request.Headers["Accept-Encoding"] = "gzip";
                request.Headers["Accept-Language"] = "en-us";
                request.ContentType = "application/x-www-form-urlencoded";
                request.UserAgent = "Mozilla/4.0+";
                request.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
                request.AutomaticDecompression = System.Net.DecompressionMethods.GZip;

                using (System.Net.WebResponse response = request.GetResponse())
                {
                    using (System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream()))
                    {
                        System.Xml.XmlDocument MyRssDocument = new System.Xml.XmlDocument();
                        MyRssDocument.LoadXml(reader.ReadToEnd());
            return MyRssDocument;
                    }
                }

            }
            catch (System.Net.WebException ex)
            {
                throw new Exception(ex.Message);
            }

        }

        ]]>
  </msxsl:script>
</xsl:stylesheet>