Hello
Sorry to say there is no easy solution to changing the icons in this module. The icons set included with this module was created using the icomoon icon app (
http://icomoon.io/#app-features) and only includes the icons listed within the modules parameters.
If you are familiar with Icomoon, you can create your own icon set and replace the font files included with the module (../modules/j51_icons/fonts). You will also need to edit the modules style.css (../modules/j51_icons/css/style.css) to match the character codes of your new font. Following is an example of the character code for the mobile icon as seen in the CSS...
.hi-icon-mobile:before {
content: "\e009";
}
Changing e009 to match that of your new icon.
CiarĂ¡n