To include the new feed links discussed here and here, I have changed the file called “footer.php” in the directory of my current theme:

Change this:
bloginfo(‘rss2_url’)
to
bloginfo(‘url’); ?>/index.php?feed=rss2

and

bloginfo(‘comments_rss2_url’)
to
bloginfo(‘url’); ?>/index.php?feed=rss2&withcomments=1

In addition to this you have to change the file called “single.php”. In line 29.

You can find an edited version of “footer.php” here.
You can find an edited version of “single.php” here.