[support] help with php in a template

Hi, I'm using the content contemplate module for having different templates for each type of contents. I'm not able to write php, so I have a problem... I have a type of content called "pda". Each node is a brief description of a model of PDA. At the end of the page, I put 2 lines into the template of PDA's type of content, that are:

<div> <a href="index.php?q=Ausili/Podcast/ <?php print $node->nid ?> "> Download or listen to podcast about <?php print $title ?></a></div>

This lines allow user to see podcast about the PDA that he is reading. That's ok, but, if there are no podcast about that node, how can I turn off displaying that link? so users don't click to see only 2 words like "no podcast for that PDA"! Thanks in advance.