Midiland S4 7100 Plus Problems

[hone]

Hi, I'm having problems getting my Midiland S4 7100 Plus speakers to work, or play anything at all. The test button the remote doesn't do anything, well no sound is coming out. I knwo the speakers work b/c I've tested them on a different sub, but I can't get them to play on the midiland one. How do I connect the decoder box to a sblive! 5.1 card? I want to use a digital connection. But I can't get the speakers to work with the analog connection on my headphone jack in my dvd drive. I know it's reading the input because the decoder box is picking it up as analog. But I still can't get naything to play. If someone could help me that'd be great.