If you do not clear the play history when exiting Dragonfly PM, you can refer to the following methods: 1 Close the Dragonfly AM application manually: In the Dragonfly AM application, click the "exit" button and then select the "close manually" option. This way, the application will not automatically shut down but will be forced to stop running. However, the broadcast history would still exist. 2 Save the Dragonfly PM application in the background: If you want the application to automatically close when you exit but keep the play history, you can choose the "Save in the background" option in the application settings. This way, the application will run in the background until the user opens the application again. However, the playback history will not be cleared during this period. 3 Clear the application buffer: If you want to clear the application buffer and completely close the application, you can click the "settings" button in the Dragonfly PM application and then select the "system" option. Under the " System " option, find the " Caching " option and select the " Clear Caching " option. This way, the application will clear all of the buffer and automatically close when it is closed. However, the playback history would still exist.