One part of the machine does something and that influences a nearby audio controller ships perhaps.

FORBES: Does the Microsoft Surface Really Fall Apart?

In the center console is the very appealing touch-screen navigation and audio controller, which will synch up with your phone and play your music library wirelessly through the bright, fearsome Fender audio system.

WSJ: 2012 Volkswagen Beetle Review: The Beetle Mans Up | Rumble Seat by Dan Neil

The XDJ-AERO also functions as a 24-bit audio interface, MIDI controller for Traktor and HID controller for Virtual DJ software.

ENGADGET: Pioneer's new WiFi-enabled XDJ-AERO controller says goodbye wires, hello dancefloor (video)

Mixtrack Edge, the world's thinnest DJ controller with integrated audio.

ENGADGET: Numark announces Mixtrack Quad four-channel DJ controller, we go hands-on

For much of the day, the demos converged on the the Kinect (pictured), the Xbox controller that works with motion and audio sensors to sense depth or take instructions.

FORBES: Microsoft's Research, Kinect's Future

Again, as before there's a built-in audio interface, which is pretty much essential for a controller of this level.

ENGADGET

Four buttons with infrared sensors on the rotary controller allow switching between different menus, such as audio, apps, communications and navigation.

ENGADGET: Garmin multi-sensor controller concept replaces touchscreen interface with in-console dial rig

Researcher shows off its usefulness for taking on motion and audio commands so you can use it instead of a gaming controller.

FORBES: Microsoft TechForum: Kinect is the Future

While the Xbox 360 requires a quick trip to the dashboard to edit things like resolution and audio output, the Echo is easily configured without a gaming controller, thanks to a user interface that has the same look and feel as the rest of Media Center.

ENGADGET: Ceton Echo Windows Media Center Extender review HD

We are committed to bringing creative product solutions to gaming with not only this revolutionary gaming controller, but also a full line-up of gaming specific audio products.

FORBES: CES: ZAGG Debuts iPhone 5 Integrated Dual Analog GamePad And Protective Case

We are committed to bringing creative product solutions to gaming with not only this revolutionary gaming controller, but also a full line-up of gaming-specific audio products.

ENGADGET: iFrogz's Caliber Advantage iPhone 5 gaming case hands-on