.M4P

.M4P file extension

This is the list of programs to work with .M4P extension

iTunes

iTunes MPEG-4 Audio File (Protected)

Organize and enjoy the music, movies, and TV shows on your computer.
RealPlayer Plus

RealPlayer Plus AAC Purchased Audio

PPS網路視頻

PPS網路視頻 MPEG-4 視頻檔案

Player

Player MPEG-4 media

Player is a program that allows you to play and listen audio and video files.
Adobe Acrobat Professional

Adobe Acrobat Professional

Create, edit, convert, sign, annotate, and compress PDF documents.
Subtitles Plugin for RealPlayer

Subtitles Plugin for RealPlayer AAC Purchased Audio

PPS

PPS MPEG-4 视频文件