If you mean how do you make iTunes the default player then disable the LW media player so your default audio player plays instead. Tools>Options>Player & untick option. But it won't take effect until next time you open LW. (For mac OSX that's LW preferences>Player.) It might also be worth seeing this: How to transfer music to my iPod (& iTunes) If iTunes is not your default player then use the same principle as here: Setting Default video app except apply it to audio files such as mp3, m4a, etc.