In this video from AppleGenius0921 we learn how to sync a Blackberry with a Mac and iTunes. There is now Blackberry software for Mac. After downloading, start up the application. Take your USB cable and connect it from your Blackberry to your Mac. You can see all the applications on your Blackberry listed on your Mac. Here you can also check for updates and see your available memory. Also you can backup all of your data here. This will make a copy of everything on your Blackberry and put it on your computer. Do not disconnect it until the backup is complete. To sync your music, go to Media and from here you can select what iTunes playlists or artists or songs you'd like to sync to your Blackberry.