I have discovered that when tou link you tube to CB Nation it is now just leaving a generic "YouTube" thumb and not wanting to play very well.
When you go to link it to here select the embed code under you vid.
Under the embed code there are 3 check boxes
Check the box next to "use old embed code"
Make sure the other 2 boxes are un checked (don't know if it would make a difference but I unchecked them)
copy and paste the embed code onto the youtube video upload section on here
Here is a video linked using the old embed code