Secureimage in CodeIgniter - php

Question

So I wan't to use secureimage on CI coz' I don't want to use the default CAPTCHA helper since it doesn't have an audio option but I have a problem displaying the audio when using secureimage.
I copied the whole secureimage folder that I downloaded from the site to the library of CI.
Displaying the image is fine and also checking the inputted code. But my problem is displaying the audio file. I have no idea how to do it.
Here is how I displayed the image and for checking (already used the secureimage library):
function captcha_image(){
$img = new Securimage();
return $img->show();
}
public function captcha_check(){
$img = new Securimage();
$input = $this->input->post('imagecode');
$result = $img->check($input);
if($result)
$message = "success";
else
$message = "try again";
}
My view:
<img src="<?php echo site_url('form/captcha_image') ?>" alt='captcha' />

Answer 1

If you are using this library
https://github.com/subdesign/CI-HTI-Securimage
So The Method to get the Audio file is
$img->outputAudioFile();
But you have to configure ( settings ) the audio path directory and make sure its rewritable
$settings['audio_path'] = '....';// If you didn't configure this it will secureimage library path and follow by dir /audio/
$settings['audio_noise_path'] = '...';//save as above audio path
$settings['audio_use_noise'] = true; // true or false;
$settings['degrade_audio'] = true; // true or false;
// Then init the secureimage with the options
$img = new Securimage($settings);
$img->show(); // this will show the image src
$img->outputAudioFile(); // this will output the audio file to the browser