3d sound

im making a top down shooter

the view rotates with the player

Code:

sound_3d_set_sound_position(sound_music,Gun.x-x,Gun.y-y,0); 
sound_3d_set_sound_distance(sound_music,50,200);

this code is all well and good, but how the @#&! do i make it pan left and right when the player turns?

AND

how do i play the same sound multiple times, but in different places? like one on the left and one in front of the player, and still hear both?