A new issue I've recently encountered (it was working) is I can no longer scrub sound on the timeline. Playback is perfect, including the sound, but as soon as I try to move the playhead while editing lip syncing or similar, I can't hear a thing. Any ideas? Refreshing the scene / restarting ChA or the computer don't fix it.
Another audio issue I've had is when using Bluetooth headphones to listen to music (spotify etc), as soon as I open Character Animator the sound quality drops considerably to sound like a very low resolution. Quitting ChA fixes this.
For info I'm running MacOS High Sierra on a Late 2015 27" iMac i7.
Not an answer, but I find pulling out headphones (and replugging) can turn off the volume sometimes (not sure exact sequence). Going to “Preferences / Audio Hardware” and changing the hardware to speakers and back to headphones seems to reset things. (Not a solution - but might be quicker than exiting and restarting.)
Thanks! I had a look in Audio Hardware and managed to fix it. In case anyone else has this issue I changed Master Clock to 'Out Built-in Output' instead of 'In Built-In Output'. Not sure why or how it changed, but changing it back fixed it.