CapMonster 2 software starting from 2.5.0.0 version allows to recognize audio FunCaptcha. We have developed special module ZennoLab.AudioReCaptcha for it. When you get FunCaptcha on a webpage, you should select audio recognition and send it to CapMonster.

To send audio FunCaptcha from ZennoPoster (v 5.9.5.1 and higher) you should use the following snippet. Here is the code:

// Main settings
 
// waiting timeout
var waitTime = 1000;
// attempts to load captcha
var tryLoadElement = 60;
// show recognizing progress messages
var needShowMessages = false;
 
// Additional variables
 
// tab
var tab = instance.ActiveTab;
// congratulations, you are not robot
var success = false;
// audio file
var file = string.Empty;
// file has been deleted
var fileDeleted = true;
// answer to audio captcha
var answer = string.Empty;
// timeout exceeded
var timeout = false;
// error loading file
var fileLoadingError = false;
var usedURLs = new List<string>();
 
Action OpenAudioForm = () => {
	project.SendInfoToLog(" Opening the form with audio task", needShowMessages);
	for (int k = 0; k < tryLoadElement; k++)
	{
		var audioButton = tab.FindElementByAttribute("span", "class", "fc_meta_audio_btn", "regexp", 0);
		// if found
		if (!audioButton.IsVoid)
		{
			// click button
			audioButton.Click();
			break;
		}
		System.Threading.Thread.Sleep(waitTime); // pause
		if (k == (tryLoadElement - 1)) timeout = true;
	}
};
 
// Downloading mp3-file
Action GetAudioFile= () => {
 
	var href = String.Empty;
 
	// getting audio task
	for (int k = 0; k < tryLoadElement; k++)
	{
		var audioChallenge = tab.FindElementByAttribute("a", "id", "recaptcha_audio_download", "text", 0);
		// if found, getting link to audio file
		if (!audioChallenge.IsVoid)
		{
			href = audioChallenge.GetAttribute("href");
			break;
		}
		else System.Threading.Thread.Sleep(waitTime);
		if (k == (tryLoadElement - 1)) timeout = true;
	}
 
	foreach (var usedUrl in usedURLs)
	{
		if (usedUrl.Contains(href))
			throw new Exception("new audio file is absent");
	}
	usedURLs.Add(href);
 
	project.SendInfoToLog("Downloading audio file", needShowMessages);
	try
	{
		var proxy = instance.GetProxy();
		var respType = ZennoLab.InterfacesLibrary.Enums.Http.ResponceType.File;
		var timeoutRequest = 30000;
		var cookies = instance.GetCookie("google.com", true);
		var userAgent = project.Profile.UserAgent;
		var maxRedirectCount = 1;
		var downloadPath = project.Directory + "\\audiofiles";
		file = ZennoPoster.HttpGet(href, proxy, "UTF8", respType, timeoutRequest, cookies, userAgent, false, maxRedirectCount, null, downloadPath);
		fileDeleted = false;
	}
	catch (Exception ex)
	{
		throw new Exception("Failed to download audio file");
	}
};
 
Action Recognize= () => {
	project.SendInfoToLog("Recognizing", needShowMessages);
	try 
	{
		if (!File.Exists(file)) 
		{
			fileLoadingError = true;
			fileDeleted = true;
			return;
		}
		var bytes = File.ReadAllBytes(file);
		if (bytes.Length < 1024)
		{
			fileLoadingError = true;
			return;
		}
		string str = Convert.ToBase64String(bytes);
		var rc = ZennoPoster.CaptchaRecognition("CapMonster2.dll", str, "CapMonsterModule=ZennoLab.AudioReCaptcha&ParallelMode=true");
		answer = rc.Split(new [] {"-|-"}, StringSplitOptions.RemoveEmptyEntries)[0];
	} 
	finally 
	{
		if (File.Exists(file)) 
		{
			File.Delete(file);
			fileDeleted = true;
		}
	}
};
 
Action InputAnswer= () => {
	if (!String.IsNullOrEmpty(answer) && answer != "sorry")
	{
		project.SendInfoToLog("Inserting answer", needShowMessages);
		HtmlElement audioAnswerInput = tab.FindElementByAttribute("input:text", "id", "recaptcha_response_field", "text", 0);
		// if found
		if (!audioAnswerInput.IsVoid)
		{
			// inserting answer
			audioAnswerInput.SetValue(answer, "None", false);
		}
		// pause
		System.Threading.Thread.Sleep(waitTime);
	}
	else throw new Exception("Answer not received");
};
 
// Verifying
Action SubmitAnswer= () => {
	// searching "Verify" button
	HtmlElement apply = tab.FindElementById("audio_submit");
	if (!apply.IsVoid) apply.Click();
	// pause
	System.Threading.Thread.Sleep(waitTime);
};
 
Action CheckTimeOut= () => {
	if (timeout) throw new Exception("Timeout of loading element has been exceeded");
};
 
// Recognizing captcha
OpenAudioForm();
CheckTimeOut();
GetAudioFile();
CheckTimeOut();
Recognize();
if (fileLoadingError) throw new Exception("Error loading file");
CheckTimeOut();
InputAnswer();
CheckTimeOut();
if (!fileDeleted)
{
	if (File.Exists(file))
	{
		File.Delete(file);
		fileDeleted = true;
	}
}
SubmitAnswer();
return "ok";