Numark HDCD1 Dual CD Player with 40GB Hard Drive Large internal hard drive stores MP3s and uncompressed audio Rip audio from CD Transfer audio files from computer over USB Record through line inputs Store entire DJ collection Instant song and CD data Dual CD Players Operate as standalone professional dual CD player Full compatibility with CD, CDR Data (MP3), and CDRW 2 jumbo displays and navigation controls Quickly create playlists of entire music sets Search CDs and hard drive by song, artist, CD, MP3 CD, and CDRW compatibility 2 jumbo displays Included software allows upload and backup of music files, song and playlist data editing, and exporting song lists as text Store your entire collection of music in the innovative Numark HDCD1 rackmountable dual CD player with built-in 40GB hard drive! The large internal hard drive stores MP3s and uncompressed audio that can be ripped from CD, transferred from computer over USB, or recorded through analog inputs