Dev site links aren't updating when site goes live.

We just switched from http://omega.kellenberg.org/ to http://www.kellenberg.org/ and we have no idea how to get our URL links to update.

For example, this page has a ton of links, but they're all pointing to omega.kellenberg.org.

We've had almost all of the photos update, but there are also a few places where the photos are still "omega.kellenberg.org/~"

Is there a way to fix this?