yes I can help, you have two sources(sources=cable box and dvd player) that have OUTPUTS and no INPUTS, you will need a A/V receiver with two optical digital INPUTS to hear anything (not to mention at least a couple of speakers).
good luck
What part of "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed." do you not understand?