John wants to know the best way to play music from his iPad to his older stereo equipment. Leo says that he'll need to convert the digital data to analog before connecting it with a digital to analog converter. There's a dock that Apple makes that connects through the 30 pin connector.
The other option is to get an Apple TV and use AirPlay to do it if his stereo is connected to the TV. But the easiest way is to just use the audio minijack and plug it into an auxiliary input on the stereo.