Include any one jquery library.Need not required to include it multiple times for multiple plugins.
Better to go for latest possible version available by the time.eg:
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="js/jquery.galleriffic.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"></link>
Hope this will resolve your issue.