[ggreer]

While I agree with the sentiment, in this case all I can say is: You're missing out. I enjoyed the relaxing, ambient-ish sounds combined with tempting links to Wikipedia articles.

I'm not sure there is a good solution to auto-playing. People are fine with it on well-known sites like YouTube, Vimeo, Soundcloud, etc. And most people, when they unwittingly click on a YouTube link, blame the person who made the link, not the site itself. Bizarrely, the target of ire shifts to the site if it's not popular enough.

[pmr_]

I just went clicking randomly on Vimeo links and I didn't find a single auto-playing video.

You are right about YouTube and I actually think they should handle visitors that come from outside YouTube differently than visitors from inside the site. In the first case auto-play is annoying in the second it is what is wanted.

[ersii]

How do you know that most people are fine with automatic playback on popular sites like YouTube, Vimeo and Soundcloud?

(Genuine question, as you stated it as a matter of fact. Not trying to be obtuse or annoying.)