Convert M4P to FLAC

This should be a fairly simple request, as converting iTunes Music Store Audio Files directly to WAVE Audio Files (.m4p to .flac conversion) is absolutely doable, although there might not be many available options.

For a reliable conversion, use audio editors and (online) converters, such as Helium Music Manager or MediaMonkey, which support both file formats and allow users to import M4P audio and export it in FLAC format.