In this tutorial, we learn how to compress files on a Mac using Simply RAR v1.09. First, go to this website and download this software from http://www.macupdate.com/info.php/id/21430. Now, drag and drop this into your application and open it up. now, make a new folder where you want and name it anything you want. Next, drag and drop your movie into the SimplyRAR software, then choose a compression method. After this, choose the options you want that are on the lower right hand corner. Next, choose how you want your volumes to be split, then go ahead and compress the file. After this, load it into the folder you created, then you will be able to open it and you're finished!