File, Export is not available in the evaluation copy of NWC2.
- MIDI events->MIDI-Yoke->MIDI-OX->logfile->t2mf->midifile
Took me about ½ hour to figure out. Once you are set up, it takes about 5 seconds plus the running time of the MIDI. An added bonus: fermatas and breath marks work. The midifile produced is nearly useless for import, but it plays just fine.
Very low overhead, ~4% CPU usage on my 500MHz machine using a hardware synth.