Some post formats not displaying in feed correctly

So I’m using a theme that offers several different post formats. When I post using the non-standard post format the content does not display correctly in my RSS feed.

For instance if I use the quote format – the subject line I give the post shows up, but not the quote itself.

Or if I post using the video format, it doesn’t show the actual video embed in the feed.

Any tips on what I’d be looking for in theme files to fix this?

You can see my site at http://bookgeeks.net to see what I mean.