Another newbie - random PATHS (not motion)

I only know the basics in Flash so I’m not quite sure how to word this…

Say I’ve got one linear motion guide that then splits in three directions. I’d like my object to travel on the path and then randomly choose which of the three paths to take. I have no idea where to begin and have searched for scripts - only general random motion scripts have popped up through.

Hopefully, in the end, I’d have multiple objects travelling on random paths - similar to this - http://www.flashkit.com/movies/Scrip...1926/index.php. Not on a grid though, more a maze, kind of like those multiple characters in Pacman.

Does any one have any suggestions?
Thanks in advance.