//remove invalid char in path and filename
    public string removeInvChrInPath(string origFileOrPathStr)
    {
        string validFileOrPathStr = origFileOrPathStr;

        //filter out invalid title and artist char
        //char[] invalidChars = { '\\', '/', ':', '*', '?', '<', '>', '|', '\b' };
        char[] invalidChars = Path.GetInvalidPathChars();
        char[] invalidCharsInName = Path.GetInvalidFileNameChars();

        foreach (char chr in invalidChars)
        {
            validFileOrPathStr = validFileOrPathStr.Replace(chr.ToString(), "");
        }

        foreach (char chr in invalidCharsInName)
        {
            validFileOrPathStr = validFileOrPathStr.Replace(chr.ToString(), "");
        }

        return validFileOrPathStr;
    }

    

            string mid_tit;
            if (crl.extractSingleStr(@"<p\s+?class=""mid_tit"">(?<mid_tit>.+?)<p>", respHtml, out mid_tit))
            {
                albumInfo.name = crl.removeInvChrInPath(mid_tit);
            }

            string h1user;
            if (crl.extractSingleStr(@"<h1\s+?class=""h1user"">(?<h1user>.+?)</h1>", respHtml, out h1user))
            {
                albumInfo.author = crl.removeInvChrInPath(h1user);
            }