CEO Steve Jobs demonstrated creating a podcast during his January 10, 2006, keynote address to the Macworld Conference & Expo using new "podcast studio" features in GarageBand 3. When it added a podcast-subscription feature to its June 28, 2005, release of iTunes 4.9, Apple also launched a directory of podcasts at the iTunes Music Store, starting with 3,000 entries. Apple's software enabled AAC-encoded podcasts to use chapters, bookmarks, external links, and synchronized images displayed on iPod screens or in the iTunes artwork viewer. Two days after release of the program, Apple reported one million podcast subscriptions. Some podcasters found that exposure to iTunes' huge number of downloaders threatened to make great demands on their bandwidth and related expenses. Possible solutions were proposed, including the addition of a content delivery system, such as Liberated Syndication, aka Libsyn; Podcast Servers; Akamai; a peer-to-peer solution, BitTorrent; or use of free hosting services, such as those offered by the Internet Archive or Anchor. Since September 2005, a number of services began featuring video-based podcasting, including Apple (via its iTunes Music Store), and the Participatory Culture Foundation. These services handle both audio and video feeds. See also List of podcast clients Uses of podcasting Enhanced podcast History of the Internet History of iTunes History of radio History of YouTube References Podcasting