1. Ensure that both the DVD player and the stereo system are powered off.
2. Locate the audio output ports on the DVD player. These are typically red and white RCA jacks.
3. Locate the audio input ports on the stereo system. These are also typically red and white RCA jacks.
4. Connect the red RCA jack from the DVD player to the red RCA jack on the stereo system.
5. Connect the white RCA jack from the DVD player to the white RCA jack on the stereo system.
6. Once the audio cables are connected, turn on the DVD player and the stereo system.
7. Select the appropriate input on the stereo system to match the input that the DVD player is connected to.
8. You should now be able to hear the audio from the DVD player through the stereo system.