I have to admit I'm not entirely sure how I did it. A friend was helping me with a whole host of suggestions. Something worked. I think the most likely candidate was this:
Inside the blog design screen, click into Settings and then click into Other.
Scroll down till you get to the heading "Site Feed". Check that the final option 'Enable Title Links and Enclosure Links' is set to "yes". I think that's what worked for me. Then you need to find some good videos to post so we can all check for you. :)
|Allow Blog Feed ?|
|Post Feed Redirect URL ?|
|Post Feed Footer ?|
|Enable Title Links and Enclosure Links ?|