I know that. I'm asking if anyone has seen a similar unobtrusive Flash widget that provides a JavaScript API for accessing audio input.

UPDATE: After a bit of searching around, it looks like there are no convenient APIs within the Flash player itself for recording audio to any kind of object that could then be uploaded - instead, you need to have an open network connection to either Flash Media Server or Red5 (the open source equivalent) and then get the server to encode to MP3.

There is also Wowza.