oh lol, i didn't read enough of the thread http://en.wikipedia.org/wiki/Vinyl_emulation_software Vinyl emulation software allows the user to physically manipulate the playback of digital audio files on a computer using the turntables as an interface, thus preserving the hands-on 'feel' of deejaying with vinyl while allowing playback of audio recordings not available in phonograph form. This allows DJs to scratch, beatmatch, and perform other turntablism that would be impossible with a conventional keyboard-and-mouse computer interface.