I figured it out and will post the answer just in case someone else was looking. You need to add this code:
<div id="controls">
<a href="" class="prev"><?php _e('Prev', 'arras') ?></a>
<a href="" class="next"><?php _e('Next', 'arras') ?></a>
</div>
In the home.php file located in the arras-classical-gamer/library. Place it between the slideshow div and the slideshow-outer div. Then add this to user.css
#controls { position: relative; float: left; z-index: 100; top: 90px; }
#controls .next, #controls .prev { text-indent: -9000px; width: 30px; height: 30px; display: block; z-index: 1000; opacity: 0.7; }
#controls .prev { background: url(http://kevinlien.com/images/prev.png) no-repeat; float: left; position: absolute; left: 10px; }
#controls .next { background: url(http://kevinlien.com/images/next.png) no-repeat; float: right; position: absolute; left: 610px; }
#controls .next:hover, #controls .prev:hover { opacity: 1; }
#controls a:focus { outline: none; }
Then start massaging the css. 