Simplify the following text for a Grade 5 native English-speaking person.
Original: In January 2007 , EMI stopped publishing audio CDs with DRM , stating that `` the costs of DRM do not measure up to the results . '' Following EMI , Sony BMG was the last publisher to abolish DRM completely , and audio CDs containing DRM are no longer released by the four record labels .
Simplified: Other companies also use DRM .