No other consumer electronic device has created such an impact on popular culture in recent years as the Apple iPod. Since iPod's release in November 2001, music fans have been able to carry upwards of 15,000 song files on those sleek devices with their trendy white headphones. Over ten million iPods have been sold--nearly half of them in the last three months of 2004. A nationwide survey conducted by the Pew Internet and American Life Project found more than 22 million U.S. adults--approximately 11 percent of the population over age 18--have an iPod or another version of an MP3 player. Some libraries are circulating iPods to enhance and improve access to library services. This article discusses the use of iPod's in the library systems.