i'm programming something that captures sound from the computer micro and creates some visual stuff with FFT and a beat detect. 

The thing is that what is captured by the micro is played at the same time, creating some kind of feedback when volume is turned up.

the question is if it's possible to mute the sound but at the same time not to cut the getLineIn data flow, in the way that visuals continue working, but without any sound played.

thank you, i tried hard with my english ;)