[SOLVED] How to enable something in all posts without it appearing on pages

Hello everyone - thank you for looking at my post. I am using Atahualpa 3.5.1. I am trying to use something called 'emo vote' for all my posts. It tells you to insert the following code into index.php and single.php file:

<?php if (function_exists('emo_vote_display')) emo_vote_display('No votes', '1 vote', '% votes'); ?>

I inserted it in the backend of atahualpa to the 'style and edit center column' area and inside the 'wordpress loop'. When I do that, it does appear a the beginning of each of my posts, but it also appears on all the pages. So I tried:

<?php if ( is_single() ) { ?>
<?php if (function_exists('emo_vote_display')) emo_vote_display('No votes', '1 vote', '% votes'); ?>
<?php } ?>

This worked to get rid of the voting on each page, and kept it in the posts. However, you have to click and 'expand' the post to it's own page to actually see the voting - you can't see the voting bar on the front page.

Any suggestions? Thank you in advance!