Play back MP3 and WMA (Windows Media Audio) files with this digital audio player with 2 GB built-in memory. Contains DRM (Digital Rights Management) for content/copy protection. USB driver for Microsoft Windows 98SE. Plug and play for WinME, Win2000, WinXP and MacOS9 or above. Includeds standard accessories: earbud neckstrap, wrap around "in-ear" headphones, USB cable, user manual and PC driver CD-ROM. Minimum System Requirements: Microsoft Windows 98SE or higher/MacOS9, USB Port, CD-ROM drive.