How do you download songs into mp3player?

By default, iTunes Music uses AAC (Advanced Audio Coding) format. You cannot download iTunes music to Sony MP3 Player.

To transfer iTunes files or other files to your portable player, you can use a third-party tool like Macsome iTunes Converter. It is able to download iTunes files and Apple Music songs to MP3, so that you can transfer iTunes music to Sony MP3 Player or other devices without limits.