Simple Fullscreen Looper w/ USB Updates

1. Plays all content images & video

2. Currently set to scale to fit for images and video

3. Current time for images is set to about 4 seconds.

4. Checks for USB insertion every 10 seconds. 

5. After every 4 USB updates, automatically reboots the unit.
 
6. Restarts Playlist after copying content to the sd card


Messaging:
-displays on screen message if SD card is blank at startup. Asks user to insert usb.

-displays on screen message when deleting files

-displays on screen message when copying files

-displays total deleted, total copied, and lists if any copies failed

-Tells user to remove usb stick at end - message onscreen for about 10 seconds