Convert m4p to sxw

What is the difference between .m4p and .sxw?

Description: M4P is an audio file format used by the iTunes Music Store. It is a protected file format that uses Digital Rights Management (DRM) encryption to protect the audio from being illegally copied. It is one of the most popular audio formats on the iTunes Music Store and can be used to play music on Apple devices such as iPhones, iPads, and Mac computers.; The SXW file format is associated with StarOffice Writer, a word processing application that was part of the StarOffice suite developed by Sun Microsystems. The SXW file type was primarily used to save text documents that could include formatted text, images, tables, and other document elements. StarOffice served as a precursor to the more widely known OpenOffice.org suite, which later evolved into Apache OpenOffice and LibreOffice, among others.