Summarize:

On most editors, you can simply go up to "File," then select your preferred format and quality settings and click on "Save" or "Export." The program will create a new audio file that includes the changes you made. You'll typically be given a choice as to which format you want your exported tracks to be in, including the major formats like mp3, WAV and WMA. It may take a few minutes for the program to get the new file ready. After you've put the finishing touches on a track, sync it to your iTunes library or transfer it directly to your smartphone or tablet for easy listening. You'll then be able to jam out to your favorite tunes in good conscience anywhere! If you use a standalone PC, save completed songs on your hard drive so you won't lose them in the event that something happens to your device. Give your friends access to your music using file-sharing programs like Dropbox, AirDrop or Google Drive.
Choose the option to export the new file. Upload your edited songs to your device.