Yes, I remember in some of my installations (it was Linux) installing pavucontrol fixed the sound. BTW, audio/pavucontrol has to do with pulseaudio.
On my part, I've just built a completely new set of ports for 11-CURRENT, following what I stated previously -- and still, the sound in www/firefox with HTML5 works all right. Without any need for pulseaudio, although Firefox is built with pulseaudio support.
There is one trick I'm using, though: I'm using the same home directory over my installations, and I copy over /etc to every new installation.
On my part, I've just built a completely new set of ports for 11-CURRENT, following what I stated previously -- and still, the sound in www/firefox with HTML5 works all right. Without any need for pulseaudio, although Firefox is built with pulseaudio support.
There is one trick I'm using, though: I'm using the same home directory over my installations, and I copy over /etc to every new installation.