Method 3: Use iTunes Transfer Function
If you don’t have any music files in your library, you can also add music files by launching the tool directly. Click “Add to iTunes” in “Tools” at the top of the ZEUS series.
Click “+Add” to add the music files.
Click “Start” at the bottom right of the screen to start transferring the files.
After transferring to iTunes, start transferring from iTunes to your iPhone or iPad.
That’s all for transferring music files to iTunes.