Custom Social Icon hover

Hello, I just purchased one of your themes and am trying to get a custom social icon to work properly. I uploaded both a default and hover image in Custom Social Links. However, the images appear side-by-side in the footer (see http://endofnevermusic.com/) On another note: as this is a theme built for musicians/bands can you add Soundcloud, Bandcamp, ReverbNation, and other music oriented social sites to the social icon library?