Arkon Resources, Inc. will begin shipping its Powered Multimedia Mounts on Monday February 2. See
http://www.arkon.com/pdapower.html
The new mounting solution has two very cool features. First, it has a built-in USB to serial cord specifically for the Axim that will power your device all day long. Second, it has a built in amplified speaker so that you can actually hear your music or other audio while in the noisy car environment. Simply plug the audio cord into the headphone jack on the Axim and you're good to go! I plan on using this to enhance my viewing of Pocket PC Films. It would seemingly also be perfect for hearing GPS voice commands and my audiobooks. For the Axim, see models CM525 and CM526
Very cool!