Record MP3 is a Flash based webapp that allows you to create .mp3 files using any microphone. The cool thing about this tool is that it not only they give you a shareable URL but you can save the .mp3 file to your computer. Think about the possibilities for this, you could used it for grading audio feedback, audio lectures, Podcasts and whatever else you can imagine. Please watch the video below for a short demo of this tool and visit; http://www.recordmp3.org/ to get started using it.