Embedded media link change for Digests

[Ben Chiu]

I've been informed that the Christian Bale Batman audition video has been taken down by Warner Brothers. (You need to be fast to see some of these things.)

While investigating the issue, I noticed that the embedded media links sent out in our digests via email lead to the developer's web site rather than the specific media as I think most people would expect. So I changed the code to work as you'd expect.