The software is nice and really complete, but check it against a pitch fork. In my last computer setup it would identify A440 as A438 or something similar. I never went forward with using it for this reason, but it made a real good impression.Hi, This free tuner works well, it easily picks up the harp sound from the (cheap) computer microphone.
http://www1.ocn.ne.jp/~tuner/tuner_e.html
regards, John