I can can the music in the game window 'game options' or adj. its volume.
Sometimes from the start window I will mute music by hitting on the volume level symbol '♪'
I also like the natural sounds of the game and I might play WGT without headphones but what the people in the house don't like to hear is the function button sounds for Zoom & Club selection, etc. SWIITT BOOP, and I request there be a Mute option for function buttons to have the option to turn off the unnatural golf sounds.
ps
The sounds aren't really needed anyway, when I click on the zoom camera the shot clearly changes, and the club selection is apparent enough to be recognized by anyone who is competent enough to start playing WGT in the 1st place. :)