Right under the video, there's a share button. It's next to the thumbs up/down buttons. :) Click it and hit the embed button. A code should pop up under it. Just copy that code. Now back on AFF, on the tool bar at the left top there's a button that says source. Click it and paste the code where you want it. :)

Hope that helped. If not, I'll try to explain it better. ^^

XD same here bro