Plays Back CD-R/RW Discs with MP3/ATRAC3®/ATRAC3plus¿ Audio --- For customers who already have extensive music libraries, use the included software and hardware to manage, burn and playback their collection of MP3s. ATRAC3plus is an advanced audio compression technology offering multiple bit rates, allowing you to create music compilations tailored to your listening preference with the ability to get up to 490 songs on 1 CD-R/RW disc @ 48kbps.