Sound Byte is a computerized cart machine for the Macintosh. It is very similar to the so-called cart machines used at radio stations in the past. Each recording - a song, jingle, advertisement, etc, was on a cartidge, which could be quickly selected and played. Sound Byte brings the cart machine to the computer age. You can select up to 75 recordings per rack, and assign each to a button. Clicking on a button plays that recording. Multiple recordings can be played at the same time. A playlist feature allows you to organize sound clips to be played in a particular order. Sound Byte supports playback of mp3, AIFF, WAVE, au, and any sound file format supported by QuickTime.