This driver can be executed as an application by the user, and supports the MIDI mapping the following controllers:
In order to use it, you need to download the source, and compile it simply executing
Once compiled, it can be executed as ./hdjd and it will tell the controller that it has detected and if there is any problem in using it.
If you are told that the controller cannot be accessed, you can follow the instructions to allow read and write permissions to devices. See details at this page: http://www.mixxx.org/wiki/doku.php/troubleshooting