Swaps out links that contain .zip, .gz, or .tgz, .tar, and whatever else you customize your self for
login wp-login.php link.   This is great for the following reasons

1. If you want to protect your compressed files from leechers
2. If you want to get a better idea of who is downloading
3. Increase the users and readership at your site.

Currently there is plans to add the options to choose where and what gets swapped out but for now it just looks for the extensions and swaps accordingly.

To install simply drap wp-forcedownload folder into your plugins directory, then activate.

Download WP-ForceDownload (Requires Login)