The building officially was dedicated on Memorial Day of 1932. It has served as a temporary courthouse, county library, YMCA, and community center. It was closed in the 1970s, and reopened in 1993. Productions are still being held there as far as I've seen, but there are still some offices and such in the basement.
It's rumored that the building is located on or very close to a Civil War era graveyard, due to its proximity to the old Civil War Hospital in the area. Nearby MSU, formerly Beckley Junior High, and a radio station are also rumored to be haunted.
Some of the sightings at SMT include: 1. A man in his 60s wearing 1930s style clothing, seen throughout the building, including in the balcony, 2. children have been heard and seen playing inside the auditorium, and 3. a saxophone has been heard playing.
Transcription of the platform collapse, courtesy of the Herald Dispatch, 16 November 1931