Greetings!
You can use the acquire sound express VI to acquire sound
from a device. You can then wire it to a tone - Amplitude and frequency
measurement express VI. Please refer to the attached picture. Also we
have a number of express VI's which you can configure with a dialog. I
would recommend the following training -
http://www.ni.com/academic/lv_training/how_learn_lv.htm
You should definitely try to look at the example programs shipped with LabVIEW.
Thanks
Avi Harjani