I have this script for playing A sound when the a button is pressed but would also like to have the D button play the sound too. Its for a turret when it turns.
Can someone help me out with this. Here is the script i use

function Update () {

if (Input.GetKey(KeyCode.A)) {

audio.Play();

} else {

audio.Stop();

}

}

Just use the logical OR (||) operator:

    if (Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.D)) {
        audio.Play();
    } else {
        audio.Stop();
    }