This is something I discovered a couple of months ago when playing though MI2 again for the first time in over ten years. For those who own the original Monkey Madness CD with both SoMI and MI2 on it the CD also doubles as an album of twenty-one classic songs composed my Michael Land and three tracks of ambient background sounds all from the original Monkey Island game. You can load the album into iTunes or even play it on a CD player*. Dig up your old CD and try it.
*Warning: on CD players the first song will just play angry static, but the rest of the twenty-three tracks should work fine.