You have to make sure that you place the cursor after the first image. If the cursor is not in the text area, and blinking, then it will replace the first image.
Here is the code. Switch to the HTML tab and delete everything you have now in that post. Paste the following into the HTML tab in the editor. You will need to fix the links. Right now all I have is placeholder text. Note where each image link code starts with
<a href=" ? Replace the stuff between the quote marks with the URLs as required. I actually put the URL of your feed into the feed URL image code, so that is done for you.
Here is the placeholder text I used for the links
URL_for_facebook
URL_for_lastfm
URL_for_twitter
<div style="text-align: center;"><a href="URL_for_facebook"><img class="alignnone" style="margin-right: 50px; border:none;" title="facebook icon" src="http://indiekidslikepop.files.wordpress.com/2011/01/facebook.png" alt="facebook icon" width="60" height="60" /></a><a href="http://indiekidslikepop.wordpress.com/feed/"><img class="alignnone" style="margin-right: 50px; border:none;" title="rss icon" src="http://indiekidslikepop.files.wordpress.com/2011/01/feed.png" alt="rss icon" width="60" height="60" /></a><a href="URL_for_lastfm"><img class="alignnone" style="margin-right: 50px; border:none;" title="last.fm icon" src="http://indiekidslikepop.files.wordpress.com/2011/01/last-fm-e1294008317701.png" alt="last.fm icon" width="60" height="60" /></a><a href="URL_for_twitter"><img class="alignnone" style=" border:none;" title="twitter icon" src="http://indiekidslikepop.files.wordpress.com/2011/01/twitter.png" alt="twitter icon" width="60" height="60" /></a></div>