Abilene Community Theater is presenting Sound of Music this week end and next and. we are assured, the theaterwill be comfortably cool.*It wasn't so early opening night.First nighters showed a quick tendency to loosen collars. Pretty soon they started shedding coats. Man, it was hot!It was not until deep into theshow that the cause of the air conditioning failure was determined One of the youngsters in the show had hung his jacket on the switch and flipped it to โoff โ Now he, after counseling, uses a coatrack.