Best Free Podcasts. Record and send voice emails. 10 Free Audio Programs to Use for E-Learning » The Rapid eLearni. I’m no audio engineer. And odds are that neither are you. So I won’t get into all of the nitty gritty details of audio editing. If you want more details, one of the community MVPs shared some tips on how to improve your audio quality. It’s a good post and worthy reading. Today I want to share some free or inexpensive ways to work with the audio in your elearning courses.