Is my Network Player compatible with M4A files? April 09, 2024 08:20 Yes, you will be able to play M4A files on your Network Player from a connected USB Drive or NAS Drive. Related articles How do I configure my Network Player for use with locally stored music? (NAS, computer, etc.) StreamMagic App What is the latest firmware version for the 851N? Is there a limit on the USB STICK size. What is the QPlay source?