add icons to wp responsive theme submenu

Hello,
I am using a child theme of the WP Responsive theme and am trying to add icons
next to the items/words on the submenu. I have 2 menu items now and will add more.
I can't get the icons to appear that I've created. FYI the urls for the images
are:

http://yardleyliving.com/wp-content/uploads/2013/08/sayit.png (this is for the SayIt icon)
http://yardleyliving.com/wp-content/uploads/2013/08/musicnoterev2.png (this is for the PlayIt icon)

I've tried numerous ways and can't get it to work. Would you please help. My site
is under development, but I have removed the password restriction so you can take a look
at it - http://www.yardleyliving.com
Thanks.

Cathy