Stupid typos on my part. The proper links to the audio files are: http://www.mediamax.com/ab7e/Hosted/Signal_Comparison_A.mp3 http://www.mediamax.com/ab7e/Hosted/Signal_Comparison_B.mp3 There is an underscore between each word in the filename if you decide to enter the link somewhere by hand. Sorry for the screw up. Dave AB7E