The sample is based on a NI example and as such has been extremely well tested.
The sample code requires audio input from the sound card. The mixer on your sound card should allow you to effectively feed the audio output back as an input. This tested fine with my audio card. It's a very old Soundblaster. Other wise you will need to connect a signal from the earphone socket to the audio input socket. I should say I have never tried this and don't know if the signals on your card would be suitable for connection in this fashion but the principle is correct. Test just you Microphone and speak into the system first. The band selection can be improved for the output but if I remember correctly you have lots more bands in your design. For me it would be an engineering approach rather than an asthetic decision. Anyway to the dulcet tones of Howard Jones 'Like to get to know you well' it looks fantastic!
