I've been having this problem for months now, and it's been driving me nuts. Today, while poking at various potential causes, I finally had cause to run
It may not apply to everyone, but I would encourage people to have a look in that directory and see if there aren't some audio drivers that could be pruned — in particular, I suspect that the upgrade to ARK may not correctly remove ACE, and the two of them may then be fighting over control.
ps auxwww|grep coreaudiod in order to kill -HUP it. The result was startling: there were seven different coreaudiod processes forked that tangled with various audio drivers installed on the system, which included a copy of ACE, the predecessor driver to ARK. I went into ~/Library/Audio/Plugins/HAL and removed the ACE driver and a couple others I knew I wasn't using and then rebooted. Lo and behold: I listened to three straight hours of audio without a single blip!It may not apply to everyone, but I would encourage people to have a look in that directory and see if there aren't some audio drivers that could be pruned — in particular, I suspect that the upgrade to ARK may not correctly remove ACE, and the two of them may then be fighting over control.