So, the ability to embed audio occurred to me almost instantly. I'm sure it did for most of you too.
Looking back at an early meta post, it did then as well :)
Only upon reading those old posts, however, did I run into this meta post. Yay!
If it occurred to me quite soon after finding the site, and it occurred early on to those here at the inception of the beta, it seems likely that it occurs to many many contributors.
Hopefully, I just missed it? But whether I missed it or not, I think it should be a more prominent piece of information.