From Georgetown University Commons Knowledge Base
Depending on the source of the video you'd like to post, there are a few ways to do so. See the instructions on this page for details.
If you'd like to add your own, original video content, upload to YouTube or Vimeo first, then follow the instructions linked above.
Adding songs, podcasts, or other audio players to a blog is similar to embedding videos. The instructions are right here.
Upload photos from your desktop or the Web with these instructions.
Once the photo is uploaded, you can edit it's size, add a caption, or make it part of a gallery. Those instructions are here.