If I can't find a way to embed, or any other way to upload video, that's probably what I'll wind up doing.
According to a post on this page, Craigslist does not support embedded video.
http://digg.com/tech_deals/Craigslist_Meets_YouTube
by angle45media on 06/27/2007
“can’t you embed video into your ad already through craigslist?”
by alanjacobson1 on 06/27/2007
“Nope. We checked in with Craig himself yesterday. He says he has no plans for video.”