E53 - Hook aftermarket DVD player to car speakers

[Dark_stranger]

I have an aftermarket DVD player that transmitts the audio to wireless (IR) headphones, but would like it so the DVD audio also plays through the car speakers. I have got it playing through the AV1 channel on the TV\Nav headset in the front of the car, but the quality is poor. How can I get the sound playing in a quality similar to the car radio/mutli Disc CD player?

[nigwhyrito]

now I could be wrong but isn't the av1 channel mono on the tv nav setup.
what about an oem aux input?