To start DJing with MidiJ (on MS Windows XP), it's required:

• Nokia N900 with MidiJ;
  Wifi connection (broadcast UDP/IP);
  MidiJ Gateway (avaliable on MidiJ homepage, Windows only for now);
  Virtual MIDI port (one of):
  - LoopBE1
  - MIDI Yoke;
  - or Sony Virtual MIDI Router <not sure>.
  DJ Software (with MIDI support):
  - Serato SSL - MIDI mapping file:SSL SCS.3d V1.00.xml ;
  - Mixxx (not tested yet).
  - ...

Notes:
- Sliders with Relative Mode are not supported (needs testing);
- May be compatible with ipMIDI and QmidiNet (not tested);
- And alot of testing still needed.