I have tried Beta_mimoLive_2.9b1-23020, as well as Boinx_mimoLive_2.8.2-23030 but when I start a stream, I get a dialog:
But then going to the link provided (https://www.facebook.com/base454/videos/10208228592303954/) I see this:
This was with a blank project using only my webcam.