There are many, many possibilities. We've come a long way from the days of the transition from "HiFi" to two channel Stereo. The choices are byzantine. . .
One place you might want to start looking is at the Leviton Learning Center
. Home entertainment centers cross into voice and data in a hurry, in my opinion. This Adobe Reader® document: Distributed Home Audio Wiring Practices
will give an overview. . .
It's an exciting area full of future shock.