Detailed Product Description Unify SJ-DVP400 DVD Karaoke Disc Changer Player (400 Discs)Characteristics: It loads 400pcs ... playing. It has USB and card reader, karaoke player DVD Changer (400 Discs) +Card reader+USB+MIDI karaoke player ... disc is still playing??Multi Format Player supports DVD,CD+G,VCD,MP3,WMA,CD,CD-RW ... ,SACD-Multi,SACD-Stereo,SVCD,JPEG,MPEG4 & MIDI DVD even Mp4. Built-in 3-IN-ONE (SD, ...