You could do it using a script that selects a random file and opens it in the viewer pretty easily.
Or you could use one of the existing scripts which randomises the file order or selects a random file and then push return to open it:
You could do it using a script that selects a random file and opens it in the viewer pretty easily.
Or you could use one of the existing scripts which randomises the file order or selects a random file and then push return to open it: