Why? Just why would you want this? As a pilot you should surely be listening to the engine, or don't you mind if there's a misfire or unexplainable change of engine note that you don't hear because you're listening to a CD?
One of the Seneca Fives I used to fly had a music /radio/CD player fitted just behind and in-between the pilot seats.
I can remember flying to Spain way out to sea over the Bay Of Biscay.
At FL120 autopilot on above well broken cloud it was magic.
I had some really atmospheric music playing which fitted the oceanscape in front of me.
As far as I remember any transmitions by ATC cut the music out
Pace