This is a semi-common type of hit to see up. I guess it doesn't normally go bad for people, especially if you pay enough.
That would be an incredibly awkward HIT to do, and a call to get. "Hello,.. uh, yeah - so I'm calling to sing you a happy birthday song. Um, so.. here it goes.. *clears throat*.."
Easiest way for me to get around this: view frame source. All the file urls are clearly visible in source. Click on each one, they play instantly.
Sounds like too much work for a TEDlab HIT. TedLab Hits are a form of cruel and unusual punishment. Good to know for other HITs in the future
Lately it seems I have to use the source code search at least once a day, but usually it's for videos that don't load within the survey. This time was pretty quick -- just kept the source open in another tab and went click, click, click down the page.