All of the Conditional Tags test to see whether a certain condition is met, and then returns either TRUE or FALSE.

WordPress Codex

So I just had to find out on every page if it was the home page, a single page or a archive page. I used just basic PHP code for this. I placed this code where the <object...> formerly was placed:

<?php

    if (is_home())
    {
    echo '<object type="application/x-shockwave-flash" data="home.swf" width="760" height="400">
    <param name="movie" value="home.swf" /></object>';}

    elseif (is_single())
    {
    echo '<object type="application/x-shockwave-flash"data="single.swf" width="760" height="400">
    <param name="movie" value="single.swf"/></object>';}

    else
          {
          echo '<object type="application/x-shockwave-flash" data="/flash/news.swf" width="760" height="400">
          <param name="movie" value="/flash/news.swf" />
          <img src="news.jpg" width="760" height="300" alt="news" />
          </object>';}
?>

This is basically it. If you want more information, read the aforementioned wordpress codex page.