How to Zip and Unzip Files & Folders in iTunes Download or the Mac App Store You can extract files and directories using the command line (macOS) or with iTunes on your PC. Both of these methods require Terminal. Here's how it works: Open iTunes on your PC. Click the Go button. Go to the iPod, iPhone or iPad icon in the bottom left corner. Click “iPod/iPhone” in the drop-down menu. Compress all of your iTunes music into a single folder in Mac OS X.