How to get expansion audio from NES gyromite adapter?

[satoshi_matrix]

I got a copy of Lagrange Point for x-mas and would like to play it on my NES. My NES has the 47k resistor mod but I'll need to add something to my Famicom-to-NES adapter to get it working.

I have a Gyromite adapter. Can I mod it to get expansion audio to pass through it and if so, which pins and what resistors should I use? thanks. the more info the better.

[UglyJoe]

http://www.famicomworld.com/forum/index.php?topic=1860.msg21868#msg21868