Take audio files in a popular format like MP3 or AAC. If you've purchased this music through iTunes, you can't listen to it on your Android device because it doesn't have an iTunes app. However, your computer can upload those files to Google's cloud storage, allowing you to play your tracks through the Google Play Music app (for Android and iOS). First, install the Google Play Music Manager, which lets you transfer up to 100,000 songs to the cloud for free, on your computer. Then open the program and log into your Google account. To start the upload process, click Upload Music, choose iTunes, and then select Next. Now you can access those tunes on any device through Google Play Music.