all sblive's have digital out's. the most common use is to convert the output over to a single wire generic "RCA" cable, which would feed the coaxial digital input on your home stereo reciever. But of course, you'd need to have a receiver with coaxial ditial inputs (most home theater receievers do). basically, it's like hooking your speaker outs up to your receiver, but instead you are using a digital signal, and therefore get much better sound quality. you can convert the sblive! digital out over to RCA using a simple 1/8inch (may be 1/32nd) male to RCA female converter at Radio Shack.