How Do I Convert iTunes M4P Files to MP3?
Music purchased prior to January 2009 from the iTunes Store has the file extension .m4p, which stands for MPEG-4, a file format. These files are protected with Digital Rights Management (DRM), which prevents you from sharing your music and other purchased content with unauthorized users. To convert purchased M4P files to MP3 you must upgrade your music using the iTunes Plus feature, which removes the DRM protection on your files and changes the file format to M4A. Once your music has been upgraded, you can use the iTunes program’s audio conversion tool to convert your files to MP3.
