Okay, so I have been using my parents OS X login primarily for my computer life. I have made videos, played games, etc. using one account. But I decided to make my own account, and have had some success transferring files. However, the permissions are still set to the other account. So in iMovie, I can watch my videos but not edit them, since I have read-only permissions. I could easily go into finders "get info" menu and change permissions, but I have hundreds upon hundreds of imovie projects. So, how can I change the permissions of hundreds of files at a time? Editing the folders permission didn't work.