Keep getting "is not a valid SoundCloud URL' message due to HTTPS URL

Maybe i'm doing something wrong, but i;ve installed on a fresh drupal 7 this module. Created a field, no error messages, but when adding a new piece of content, i keep getting "is not a valid SoundCloud URL'.

I openend 'soundcloudfield.module' and did found this function:

// function soundcloudfield_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
function soundcloudfield_field_validate($obj_type, $object, $field, $instance, $langcode, &$items, &$errors) {
if ($field['type'] == 'soundcloud') {
foreach ($items as $delta => $item) {
if (!empty($item['url']) && !preg_match('@^http://soundcloud\.com/([^"\&]+)@i', $item['url'], $matches)) {
$errors[$field['field_name']][$langcode][$delta][] = array(
'error' => 'soundcloudfield_invalid_url',
'message' => t('%url is not a valid SoundCloud URL.', array('%url' => $item['url'])),
);
}
}
}
}

The problem with pasting from the soundcloud url is, that it copies 'https', and then the regulair expression fails. Maybe it's an option to change it so both url pass the test. Like "https://soundcloud.com/vaughan-1-1/fletch-vaughan-the-two-best" and "http://soundcloud.com/vaughan-1-1/fletch-vaughan-the-two-best, both would be 'ok'.

Or are there problems with allowing https- links?

Thanks for your time, wonderfull module!