For what it's worth:
Firefox has a tool that AFAIK makes the receiving end think that it's another type browser -- including IE7 Vista.
I used that all the time to view Fox News' videos in 10.3; could not with plain ole Firefox; could with Firefox using Tools > User Agent Switcher > IE (whatever it was in 10.3).
(BTW, with 11.0 & the latest Firefox I don't have that problem
)
Edit: I think I ordered the boxed version of 11.0 using 11.0 rc1 or rc2 with Firefox.