Some music download from itunes was .m4p extension, actually, M4P file is a protected AAC file. The .m4p extension is AAC purchased from iTunes and is under Digital Rights Management protection. In this occasion, the M4P files can only be played on Apple devices.
Therefore, how to remove DRM from iTunes M4P files is a hot problem concerned by many people. As far as I am concerned, using a professional M4P DRM Removal is the most ideal and easiest way.
DRM Media Converter is such a program that helps user to remove the DRM protection from iTunes M4P files and convert M4P to other you preferred formats at meanwhile.