Writing the last post (on audio help) dislodged an old memory of a TV on PBS, one where a calm man with frizzy hair painted and murmured about his process at the same time. At the end of each show, one painting was complete.
Now it strikes me that audio help might be bettered murmured than delivered clear preemptory voice. That way, the user's attention can move alternately from the spoken word, to the act of painting, to the painting itself–or take in all at once…whatever works best in the moment.