I figured part of it out! This is what I have for Facebook, Google+, and Twitter, but I’m missing the Pinterest and Feedburner part
/* For twitter icon */
ul.social-profile li.twitter a { background-position: -44px -43px; }
/* For facebook */
ul.social-profile li.facebook a {
background-position: 0 -43px;
}
/* For google plus */
ul.social-profile li.google-plus a {
background-position: -173px -43px;
}