I don't guess they had a studio audience watching. Also, I don't guess the show was broadcast live... in Tootsie, dustin hoffman, they mention having to do one live.
No, the show was never broadcast live. It got close once. As the show got more complicated (plot wise) and more and more special effects were being used, they did get behind in filming. They tried to have at least two weeks worth of shows 'in the can' at any given time. The closest that they got to going 'live' was the one time that there was only one show in the can. For a time they were coming in on the weekends just to try and stay ahead of the broadcast schedule. I believe all of this took place either during the 1968 or 1969 storylines. During that period the show had several rather complicated stories all going at the same time. Once the ghost of Quentin showed up, some of the other storylines were concluded and the show mainly focused on the Quentin story. Sadly, at least for me, I found that having all of those stories going on at the same time really bogged the show down. That and I didn't find any of the stories all that interesting or particularly well written. The show just seemed to have one wheel stuck in the sand. Once the show simplified and focused on one story, it got better. Odd, considering that the 1897 story was just as complicated and had just about as many different plots all running at the same time. Maybe the writing was just better for that particular storyline.