Yes - the template tag as described in the read me file.
One user has had problems with the count not showing although nobody else has come forward with a problem. I am still trying to work out what his problem is.

Well it would have to be in the template but, yes, then you can’t change the ID. The tag is really intended for use in places like a sidebar.
So - if you have it in a ‘post’ how can the download ID be determined?

That’s not the problem. The problem is that you can’t insert php code into a post.

Well - that’s up to you.

1. You can still use the plugin and track downloads via the admin panel
2. if you can determine HOW to identify a post that has a download on it then the tag could go in the post template which would work fine.
3. And - the way I do it is that I put my plugins (which is what I track) each on a separate WP Page and I use a special page template for these. I have the template tag on the page and actually pass the value in from a custom field.

There are lots of ways of doing it but no, you can’t just put the php code into post content.