Thanks for that information, Shonky!

Currently what I'm trying is a circuit like this, except where it says "speaker" it's the empeg line outs, and where it says "line out" is where I'm plugging it into the RN-52 chip. (obtained from here.)

Do you think that would work, or do you think there is a better way?

Maybe I should really just put a variable stereo pot on it so that I can adjust the attenuation?