Follow the procedure below to use iTunes for transferring audio files.
- Start up iTunes on the Mac/PC.
- Connect your iOS device to the Mac/PC, and then select the iOS device that appeared (from the icons in the upper-left corner of the screen).
- In the left sidebar, select “Apps”.
- Select “iAudioGate” below [File Sharing] in the page that appeared.
- Click [Add], and then select the audio file of the song that you want to transfer.