-An Ogg/Vorbis, MP3, FLAC or Ogg/Speex encoder (oggenc, vorbize, lame, gogo, bladeenc, l3enc, mp3enc, flac, speexenc)
+An Ogg/Vorbis, MP3, FLAC, Ogg/Speex or MPP/MP+(Musepack) encoder (oggenc, vorbize, lame, gogo, bladeenc, l3enc, mp3enc, flac, speexenc, mppenc)