Until now, audio interaction with students was possible, but clunky. A student posted an audio message in one of my online classes several years ago.
But with software like Voice Thread, which professor Toader uses, audio messages can be "posted" in sequence and in conversation, just like written comments are in most all online courses today. It adds a whole new dimension to using audio in online courses. I'm anxiously awaiting professor Toader's presentation on how to use interactive audio with your students at our second annual North American Faculty Development Conference in Ft. Lauderdale March 3-4, 2014. I'll know more then. If you want info on the conference, just email Tammy at email@example.com or call her at 800-678-5376 for the brochure.