Are you talking of this site: http://ourcollectivevoice.wordpress.com/ ? I'm just asking as I can't see anything on the front page except for a link to the about page. If you're talking of another blog, please provide the URL to that blog.
It could also help if you can provide a screenshot of what you see. Upload the screenshot to your media library and give us the link here, or you can paste it to a service like http://snag.gy/ and give us the link that produces.
Also let us know exactly what type of video you're trying to embed. Is it a Youtube video, or from another online video hosting service, or are you trying to show a video you uploaded to your media library? Please describe the steps you're following to insert the video into your post/page.