How do I get rid of the calendar audio alert?

Remove Alerts in Calendar Settings.

1. Press and hold on the screen for a few seconds to bring up the Advanced Menu.
2. Choose Advanced Settings.
3. Choose Applications.
4. Choose Calendar.
5. Under Reminder Sound, choose Clear to remove the wav file.

1. Go to C:\Program Files (x86)\Tobii Dynavox\Communicator 5\Page Sets\System\Popups
2. ​Double tap/click Reminder.cddx.
3. Select Page.
4. Select Page Actions.
5. Select Page Open Actions.
6. Under Added Actions, select Play Sound.
7. Select Remove.
8. Select Ok.
9. Select File.
10. Select Save As.
11. Name it.  I would name it Reminder 2 and save it your desktop to find it easier.
12. Select Save.
13. Select View.
14. Select Run.
15. On your desktop, right click on Reminder 2 and select copy.
16. Navigate to C:\Program Files (x86)\Tobii Dynavox\Communicator 5\Page Sets\System\Popups
17. Right click in the window and paste Reminder 2 here.  (if you get an access denied warning here or during any of the remaining steps, select continue)
18. Delete Reminder.
19. Rename Reminder 2 to Reminder.