If you have a DVD Surround Sound system in your home entertainment set-up, you don't need any kind of fancy "iPod dock" to listen to your music through your surround sound. Depending on the age of your set-up, you can connect your iPod to your surround sound system in one of two distinct ways. Each offers high quality audio performance that will be sure to rattle the walls of your home in true surround sound fashion.
Purchase either an auxiliary cable or an iPod audio/video cable. If your DVD surround sound system has an auxiliary jack, all you need is an auxiliary cable. If your DVD surround sound system does not have an auxiliary jack, you can purchase the iPod audio/video cable from any place where iPod accessories are sold.
Plug one end of the cable into your iPod. If you're using an auxiliary cable, the cable plugs into the headphone jack on your iPod. If you're using an iPod audio/video cable, the cable plugs into the port on the bottom of your iPod.
Plug the other end of the cable into your DVD surround sound receiver. An auxiliary cable will plug into the auxiliary jack on the back of your receiver, while the iPod audio/video cable will plug into the white and red "audio" inputs.
Switch your receiver to the correct input. If you used an auxiliary cable, switch your receiver to the "AUX" input. If you used the iPod audio/video cable, switch your receiver to the input you plugged the cable into. You will now be able to hear the music from your iPod using your stereo's speakers.