Icon ALT values

Hi,

I’m building a site that must be 508 compliant, and I need to insert an ALT tag value for the icons used in DM (pdf, mp3, etc)d. I found the following code in wpdm-function.php:

if ($column_name == 'wpdm-image') {
//        if(has_post_thumbnail($post_ID))
//            echo get_the_post_thumbnail( $post_ID, 'thumbnail', array('class'=>'img60px') );
//        else {
            $icon = get_post_meta($post_ID,'__wpdm_icon', true);
            if($icon!=''){
                if(file_exists(WP_PLUGIN_DIR.'/'.$icon))
                    $icon = plugins_url('/').$icon;
                 //   $icon = "/download-manager/file-type-icons/blank.png";

                echo "<img src='$icon' class='img60px' alt='image' />";
            } else {
                echo "<img src='".WPDM_BASE_URL."/file-type-icons/blank.png' title='Default Icon' class='img60px' alt='Icon' />";
            }
        //}
    }
}

Is this where the alt value is inserted? Please advise.

Thanks,
Michael

https://www.ads-software.com/plugins/download-manager/