I thoroughly enjoyed this task.  I tried to use VAC and Audacity first, having some success calling the Skype Test Call Lady (she's so patient and "there" if no one else is online).  Unfortunately her voice was not recording loud enough and I could not figure out how to make her louder.  My USB Mic is not due in the country until 5 August so I've been using a Mic and Headset but with two separate jacks.  Not entirely sure if that's the problem.  I had already downloaded powergramo