Actually, this past Sunday things were done a little differently, at least for singing. Because it was a small group of auditionees, there was no "other room" for singing - both Gary Kline and Claudia Benack, the 2 MT singing teachers who usually do auditions, were in the same room, as was another faculty person.
They did have 2 monologue rooms but I believe if students auditioned for Barbara Mackenzie-Wood, the head of the MT program and an acting professor, they were not sent to the other room. My guess is they will go back to 2 rooms and passing people from room to room for singing when the auditions have bigger groups - but I could be wrong.