ValleyStudios: just put ?dl=1 at the end of the link, that should trigger the download right away.
Seth: you can share any file, even those not in the Public folder.
This is extremely useful for sharing stuff without having to copy them to the public directory first. For example, I have a backup of the tracks for my band's album in a Dropbox non-public folder, one song per directory. I needed to share one of those songs to a friend, and I just clicked "Share link" on that directory. Now my friend has access to all the files in the directory. Also, there's even a "Download as zip" option on the shared page so you can grab the entire directory in one click.