Well the logical first step would be to get some speakers.
these are my guesses ar to why the audio isnt working.
1) you are hooking your dish box up through component cables, which dont carry sound
2) you have not assigned the input properly on your receiver
p.s. i think the word you are looking for is bought, not brought.
i just brought the 674 . i have not yet brought the speakers. so for the time i was to use my receiver to both view dish(standard receiver) and my DVD player(upconverting) through HDMI . i am able to hook up the DVD player to HDMI IN1 and the dish into to Video 2 . now when i use the reciver to play DVD through HDMi it works fine but when i use it to watch DIsh programs i only get the video NO Audio . i have tried various combinations . how do i get the receiver to also send audio though the HDMI cable for the dish netowrk programs .
any help is appreciated .