You will want to go to Notion>Preferences, Audio and choose the proper audio interface.
You will want to go to File>Preferences, Audio and choose the proper audio interface. You will want to click the radio button next to the type of audio interface you would like to use. After clicking the radio button, you will want to choose the desired audio interface or driver from the list inside the box to the right. You will see a dialogue appear that indicates that the program is opening the audio device.
-If you continue to experience a problem with playback after setting the correct audio interface, you will want to contact the manufacturer of the device to verify that you have the latest driver installed. Also, be sure to check your speaker volume, connections, etc.