The ART USB Mix Three Channel Microphone, Instrument, and Line Mixer / Computer Interface is a compact versatile audio interface for your computer that converts analog signals from a variety of audio sources to USB Audio. The USB Mix provides a great starting point for personal home studio recording or for anyone wanting to do mobile location recording. ART Installation CD v.1.0 and instruction manual included. Also offered is a Sony WALKMAN Professional WM-D6C Stereo Cassette-Corder not presently working and in need of some TLC to restore it to working order. Instructional manual included. Take it away, no charge for the cassette recorder. The above two devices were used to transfer audio tracks from audio cassettes to CD's using a computer. Also included at no charge is the AUDACITY 2.0.3 software (on CD) and a copy of the book "The Book of Audacity" (hardly used, original cost 40.95.) As well, I can supply you with a link on how to download and install the free LAME MP3 Encoder so you can export MP3 files using the Audacity software.