I need a sound file that has gentle to medium blowing noises and occasionally stops at certain points since one of the mini games requires you to blow into the microphone. I'm using Windows Vista and I have no working microphone other than the built in one, which doesn't work at all.

Also, how do I use sound files? I don't think I'm doing it right since I tried to use a very loud sound file on it and nothing on the screen indicated anything happened.