You will be able to connect any external device to your computer, whether it be a stereo or musical instrument, and create a virtual device on your computer. Then you can link this virtual device to whatever program you want. Thereby, for example, you can record everything coming from your speakers without any loss of audio quality (a very common problem).
The configuration options let you alter more than a dozen different variables, so you get the best possible sound output; however, this sometimes requires a few minutes of trial and error.
Virtual Audio Cable is a handy tool for any user who wants to record sound on their computer. In fact, the program will create up to 256 virtual cables, which you can associate with any applications or programs you want.