This issue is normally related to your internet connection speed or other network issues and will resolve itself within a few minutes.
If you continue to experience difficulties, here are a few things to try...
1. Make sure that you are logged in - you must be logged in to access the videos. If you computer has sat idle for several minutes, you may have been auto logged out and the video won't play.
2. Try refreshing your browser window or closing the current window and opening a new one
3. You can also access the videos from your blog dashboard. Have you tried that?
4. If the videos still won't play, check to see if you have Flash enabled - this can sometime prevent the videos from playing. You might want to try disabling Flash in your browser.
If you continue to experience difficulties, open a Support Request and we'll be happy to assist. :)