"Stephen Windwalker and I urged fellow authors to tag qualifying works as drmfree at Amazon—and readers to do the same. Use the tag at other stores, too. Now the drmfree campaign has won the endorsement of DefectiveByDesign.org, a project of the Free Software Foundation..."

When you listen to digital music, your software or hardware player usually shows information about the current song, which it gets from MP3 tags or Ogg Vorbis comments. Most ripping software supports acquiring this metadata from the CDDB or FreeDB services based on a CD's disc ID. But you can also can fill in and edit metadata with tools such as EasyTag and Picard.