Kenwood isn't the only compay putting USB-equipped into thier decks, but the DPX-501 and DPX-701 models being shown at CES are quality additions.With MP3, WMA, and AAC file support off of any USB, portable audio player, or other mass-storage devices, and firmware upgrades promising to support Windows Media DRM. Opens the possibilities for direct download support from subscription based services like Rhapsody or Napster. Both models are MP3/WMA-compatible CDplayers, support for HD Radio, and are Sirius Sat ready.