Step 1: Free download M4P to WAV Converter, install and run it, see the screenshot:
Step 2: Clicking “Add” or directly drag-drop protected M4P files. Batch M4P to WAV conversion supported.
Step 3: In the "Setting" button, choose WAV format (*.wav), also you can custom the music.
Step 4: Click the “Start” button to start converting M4P to WAV.
After successful converting M4P to WAV, the result shall be stored on the "Output path" folder.
OK, now you can easily convert M4P to WAV with the help of M4P to WAV Converter. If you need it, just free download and enjoy it!