Vestax Vci 380
"VCI-380 is a 2 channel DJ controller with a built-in Digital DJ mixer, powerful and creative, opening the door to limitless possibilities of controllerism." — Vestax
(Since Vestax's current business "issues" their web site is no longer online, however archive.org has an archive of the VCI-380 product page.)
Mapping forum thread: "Vestax VCI-380"
This is the Mixxx Wiki - 
Mixxx is a free and open-source DJ software.
Manual
Hardware Compatibility
Reporting Bugs
Getting Involved
Contribution Guidelines
Coding Guidelines
Using Git
Developer Guide
Creating Skins
Contributing Mappings
Mixxx Controls
MIDI Scripting
Components JS
HID Scripting