You can add your m3u playlist URL from the following options:
From Local Storage: If you have your playlist on a USB drive, you can easily upload it to the app by using the option "From local storage."
From Web: If you have an online playlist, you can use it by using the option "From the web."
From Remote Control: You can add the playlist to the M3U player with any remote control with a numeric keypad; for example, LG remote or Samsung remote control, or any other remote control that has a numeric keypad.