I'm fine with it in this context, it's far superior to the way it's usually deployed. I think that sound control should be client side anyway, but this is pretty un-disruptive compared to things like news sites etc. that start streaming immediately.

Admittedly I was amused by the spam sound effect.

yes. At the time, I was listening to music, so I used to think that sounds were part of the music. Then I realized that from the website