In recent years, educators across the globe have begun to employ portable, digital media players, especially iPods, as educational platforms. Unfortunately, while the iPod grows in favor as a mobile multimedia learning environment, relatively little is empirically known about its educational impact. This chapter explores the use of the iPod as an educational platform and reports on a study designed to examine individual differences in iPod use as a mobile multimedia learning environment. This exploration into applied and basic research involving the iPod reveals that iPods are being used across a variety of content areas, educational levels and geographic locations, involving a variety of pedagogies. However, very little research has been conducted to establish the efficacy of the iPod for fostering learning. To address this need, the authors conducted a study that examined the effects of working memory capacity (WMC) on learning within an iPod-based mobile multimedia learning environment.