Podcasting involves the digital distribution of audio and video files that can be downloaded and listened to online. A podcaster is the creator of podcast content, which is made available through services like iTunes. iTunes allows users to listen to audio podcasts and watch video podcasts, with iTunesU specifically providing educational course content and materials from universities, schools, and other institutions for students to access anytime. Creating podcasts can involve using free, easy-to-use audio editing software like Audacity or Garageband.