Can someone please help me get sound (HDMI)

i have a pioneer vsx-1016txv, an hdtv (1080p), and two gaming systems. before i just ran the hdmi cords directly to the tv from the gaming systems and used an optical cable for the sound on each one. I was told that i can run my hdmi cables to the back of my stereo, then use another hdmi to go from the line out part of the stereo to the tv, and i was told that not only would i not need optical cords anymore but because the hdmi cables i have are so good it not only would give me sound but great sound, like 7.1 and everything. So, i did it, and i finally saw some results i saw video. but STILL no sound. So, now i have no sound, and im begging someone that knows how to fix this to help me out. thank you all soooooooooo very much.