An audio podcast is an audio file, such as an MP3, that can be played on devices like iPods or MP3 players. Podcasts allow students and teachers to share learning experiences more widely by making audio recordings accessible outside the classroom. Some advantages of using podcasts include flexibility of access time for students and easier sharing of lessons and classwork. However, schools may need to address firewall issues to enable podcast access. Overall, podcasts can enhance learning by allowing sharing of work globally, editing and re-sharing content, and providing access from different locations, including for students with visual impairments.