JFBConnect supports Open Graph Actions, which would normally have been the way to have content like you mention to automatically post to a user's Facebook account. However, Facebook recently removed the ability to use custom Open Graph Actions, so you can only use a handful of standard objects and actions and they don't support all the content types your users may share.
The only thing I can suggest for now is to use the Facebook Like and/or Share buttons in the JomSocial stream template files. With JFBConnect, adding the social buttons is pretty easy by adding tags like the below to the template files:
{SCFacebookLike}
{SCFacebookShare}
{SCTwitterShare}I hope that helps give you some ideas on how to start, but if you need anything else, please let us know.
Thanks,
Alex
How to share JOMSOCIAL's updates, videos to facebook via JFBConnect
