Hello clever people out there.

I have a couple of sony Bravia 55w805c TVs high on the wall at my business to play adverts storred as video files from a USB memory stick, but  I cant work out how to get the TV to automatically play the next one - is there a setting somewhere?

Also once its played tthe list I would like it to start playing from the beginning again.  Is there a way of doing this?

Thanks in advance.

Harri