Display Suite label below field, instead of above or inline
theoretically you should create a custom field template file overriding the default one.

If you're using Display Suite Extra

1) On DS field settings select "Drupal default" as field template

2) Override the field template following the standard drupal suggestions (see below)

Unfortunately this will not work due to a bug: http://drupal.org/node/1885480

Instead if you're not using Display suite, you'll be able to override the field template without any problem.

Override a field template is quite easy:

1) copy the "field.tpl.php" from /modules/field/theme directory and paste it on your theme directory.

2) rename the file following the rules documented on this page: http://drupal.org/node/1089656

3) change the field-???.tpl.php content moving the label below the field content like:

&lt;div class="&lt;?php print $classes; ?&gt;"&lt;?php print $attributes; ?&gt;&gt;
  &lt;div class="field-items"&lt;?php print $content_attributes; ?&gt;&gt;
    &lt;?php foreach ($items as $delta =&gt; $item): ?&gt;
      &lt;div class="field-item &lt;?php print $delta % 2 ? 'odd' : 'even'; ?&gt;"&lt;?php print $item_attributes[$delta]; ?&gt;&gt;&lt;?php print render($item); ?&gt;&lt;/div&gt;
    &lt;?php endforeach; ?&gt;
  &lt;/div&gt;
  &lt;?php if (!$label_hidden): ?&gt;
    &lt;div class="field-label"&lt;?php print $title_attributes; ?&gt;&gt;&lt;?php print $label ?&gt;:&amp;nbsp;&lt;/div&gt;
  &lt;?php endif; ?&gt;
&lt;/div&gt;