Elektor’s February 2010 issue has an interesting article on software meeting hardware in a sliding kind of way!
While a variety of remote control devices for Winamp and other PC-based media players have been available for a good while, all of these systems have one thing in common: they are limited to buttons or keys or use virtual progress bars on the computer monitor. If you want to have a complete hardware interface unit with the same level of sophistication as the virtual Winamp design, you need a physical progress bar. In the “Winamp Controller” project, a small ATmega microcontroller uses the USB interface to provide a bidirectional link between the Winamp software and a hardware studio fader, which acts as a combined indicator and entry device.
A kit of parts is now available from the Elektor Shop to build this unique project, see the link below!