Graham Nightmares https://www.google.co.uk/search?sitesearch=nightmareclick.xtgem.com&q=music&gws_rd=cr&dcr=0&ei=TYcUWt-3FMKsafTgMg
is the result for 'music' remember this will not be looking for a 'folder' called music but files that have the word 'music' in the description
all the site search does is add this code to create a simple form

<form method="get" action="http://www.google.com/search"><input type="hidden" name="sitesearch" value="nightmareclick.xtgem.com" /><input type="text" name="q" onFocus="this.value=''" value="Search this site..." style="width: 70%; height: 25px;" /> <input type="submit" value="Search" style="width: 20%; height: 30px;" /></form>

everything else is down to google or a issue with whatever device you are using