No sound in MacOS 10.7?
Well, now that more and more fanboys have upgraded to 10.7, the forums are full of it: sometimes it happens that sound stops working in MacOS Lion.
As it turns out, restarting
coreaudiod is all it takes to get it working again:
$ launchctl list | grep audio 7159 - com.apple.audio.coreaudiod $ launchctl stop com.apple.audio.coreaudiod $ sudo launchctl list | grep audio 7589 - com.apple.audio.coreaudiod