Rick,
Sorry for the delay in getting back to this. Had to do a little investigation and testing to figure things out. It's pretty easy to add, in our opinion, but depending on where you want to place things or what you're looking for, you may need to change this a little.
You'll need to make an edit to the Kunena template files. My testing was with the default one, 'blue_eagle'. Here's what to do:
* Edit /components/com_kunena/template/templates/blue_eagle/html/topic/default.php
* Around line 32, you'll see:
<div class="kheader">
<h2><span><?php echo JText::_('COM_KUNENA_TOPIC') ?> <?php echo $this->escape($this->topic->subject) ?></span></h2>
<?php $this->displayModulePosition( 'kunena_topictitle' ); ?>
Simply add our {JFBCLike} tag (and any others, like {SCTwitterShare}) as below:
<div class="kheader">
<h2><span><?php echo JText::_('COM_KUNENA_TOPIC') ?> <?php echo $this->escape($this->topic->subject) ?></span></h2>
{JFBCLike}
<?php $this->displayModulePosition( 'kunena_topictitle' ); ?>
That will add the Like button in the header area. You can add that button in other areas of that page to. That view is the overall layout for all topics, and is pretty concise, which is nice. Hopefully, that will get you going.
If you have any questions though, or need more help, just let us know.
Thanks,
Alex