Media Gallery module field settings stored in database?
You can make the 'dirty solution' from the link posted by @NikhilMohan into a more 'clean' one pretty easily:

function MYMODULE_form_media_gallery_node_form_alter(&amp;$form, &amp;$form_state) {
  if (arg(1) == 'add') {
    // Get the language code from the node object. Should be reliable.
    $langcode = $form['#node']-&gt;language;

    $form['settings_wrapper']['presentation']['media_gallery_allow_download'][$langcode]['#default_value'] = 0;
  }
}


If you're not comfortable writing a custom module you can easily drop this function into your theme's template.php file instead, but change the name of the function to MYTHEME_form_media_gallery_node_form_alter. Once you clear Drupal's caches the hook will start to be called.

Don't forget that Media Gallery is still in beta so you have to expect a few bugs/missing configuration options. Using hooks to alter the fields you need to is pretty much the only option you have here, without going directly into the database.