I didn't create the files all I know is there from another mac and they are pictures and movies

To be honest I couldn't tell u wants on them at the moment that why I want to unlock/open them lol

There are some movies and pictures on a disc that r classed as unix expendable file's all I can do is click quick look but that won't show anything either I just want to know how to open them up or change format so they can be opened up. Thanks

How do I open a unix file from disc on a mac iv tried reading about it but I don't understand. Any help! I would be very greatfull