Holy cow, that's a small baby! Congratulations on being alive!

It looks like good old fashioned jQuery, so I'm surprised your browser doesn't like it, but it looks like the direct link for the video inside the iframe is https://iframe.mediadelivery.net/embed/570723/69b827da-0ce9-...

Crazy thought but given that you have a pure sine frequency, maybe it would be possible to listen to an out of phase version of it to cancel. Same principle as noise cancelling except the noise is purely internal. Though I guess phase might drift over time making it not work. Still would be interesting to hear your results with this, success or not.