Steve I must say the beat detector in Vuo is by far the best I've encountered! But is it possible to shed a bit of light on it? Does it look at peaks all over, or is it singeling out part of the audio spectrum? I've also noticed that if I reset it, it will lock on the beat as soon as it has enough data, but if I change the tempo (maybe at an extreme like 100 <-> 140) it doesn't seem to want to change to the new tempo without resetting. At least within a reasonable time frame for a song. Is there any way to get around this?