Well, the thing can be used for more, apparently, since it most likely was not build for grabber-viewing anyway ;-)
First, lets have a look what a minimal setup can look like...
|ARCHOS 7 HT|
The only thing one has to do is to enable the USB HOST MODE in the ARCHOS' configuration menu. As soon as a pointing device is recognized, a mouse pointer is shown on the screen.
Amongst USB accessories I tested were a Micro Hub, a card-reader, thumb drives, a keyboard with built-in Hub, mice.
There seem to be ways to toggle to an alternative window manager. Android is perfect for touch-screens, operation, however when used with keyboard and mouse, the advantages of Android don't really help.