The USB3 is a set of high quality inputs and outputs for your computer. An additional program, such as Cakewalk Guitar Tracks 2 for the PC or Metro SE for the Macintosh, is required to record, edit, mix and play audio from the computer. There are many different companies that make this kind of audio recording software. So the USB3 acts as just a high quality I/O and hardware mixer interface, but all the actual audio recording is done from other programs.