From Lark software:
Professional software used for broadcast on a scheduled time at school and kindergartens, able to broadcast ring music for class beginning and dismissing, gathering, national anthem, rhythm for gymnastics and eye exercises, support to set and change the scheduled time and music at will. After setting the scheduled time and music, the music will be played on the scheduled time. and the music can be changed at will and conveniently. The software is designed with memory function. After restart of computer or software, the previous setting of time and music will be auto-loaded.