Hi Klaatu just wanted to say I was intrigued by this podcast and took a note to try this out when I get a spare 5 minutes. I just opened my most recent show into Audacity and selected Spectrogram view. The results are amazing. Any involuntary noises become so much more visible making them very easy to pick out and remove. I will be sure to use this in future shows. Thanks again for another brilliant show. Cheers MrX