Awesomeness!
Thank you so much, The Geek, for this most excellent mod. Brilliantly designed and brilliantly implemented. Best mod I've come across so far. Obviously a lot of skilled work went into this. I applaud you for the excellent work and for kindly sharing it with us.
Btw, the setting that I've come up with to give me the same exact widescreen setting that youtube uses is 385x650. I don't know how this will impact those vids that are of the smaller 4:3 format. I assume they'll just be embedded inside the same size object dimensions that I've set as the default, and will just have the vertical black bars on the left and the right of the displayed vid. But no problem living with it that way.
Thanks again.