After purchasing a device around 3 weeks ago I have now registered as a developer and I now have the ability to deploy applications to my device.
I thought I should revisit some of my previous WP7Dev related postings, one being WP7 and Microsoft.Xna.Framework.Audio.Microphone.
After creating a new project for this sample code and running it I was presented with the following error :-
"FrameworkDispatcher.Update has not been called. Regular FrameworkDispatcher.Update calls are necessary for fire and forget sound effects and framework events to function correctly. See http://go.microsoft.com/fwlink/?LinkId=193853 for details."
After a search I found the following blog post which solved the issue :-
Recording Audio in Silverlight on Windows Phone 7