You can subscribe to this remote calendar from Mozilla Calendar or Sunbird by using this url:
http://www.swingknoxville.org/calendar/sync.php?action=SwitchCal&selectedCal=1&days=30
This will import all events from this calendar for the next 30 days. You can change the number of days by setting the "days" variable to something other than 30. Be sure to set your calendar to reload remote calendars on startup or you will have to manually refresh the calendar to see the latest changes. 
