Okay, just guessing from the info you posted above which isn't much.
I am guessing you have a Dolby Surround (4 speakers) or Dolby ProLogic (5 speakers) surround system next to your TV and you are trying to hook up the surround system to your TV using the stereo output jacks on the TV (red & white).
If this is the case, yes it should work for your system to decode dolby surround or dolby prologic surround. Why isn't it working? My guess is you are not feeding your TV a stereo signal. If your TV is connected to the Dish Network receiver via RF cable (channel 3) then the TV is never getting the stereo signal. This means that the red and white output jacks are putting out the same sound and your surround amp is getting a mono signal.
If this is the case, there are two possible solutions.
1) If you absolutely know your TV is an MTS stereo TV connect the yellow, white and red jacks from the Dish receiver to the TV's video input. Connect the red and white audio output jacks from the TV to your surround amp/receiver. Set the TV to Video Input, and all should work fine. You will also get a superior picture by using the video input rather than channel 3
OR
2) Hook up the audio output, red and white, from the Dish Network receiver DIRECTLY to your surround receiver. This bypasses everything! If you still get nothing from your surround speakers on the music channels, then you may have other problems.
Again, these guesses are based on the scant info you posted. If this isn't the case, post detailed info on how you have things hooked up to what receivers including brand and models if you can. (Ie. Dish 501 and Pioneer SX60)
I dealt with this stuff for over two decades so I may be able to help.