I'm going off Windows too.I'm using the VirtualMidiSynth locally, but Windows MIDI is a nightmare on most user's machines. The Microsoft GS Wavetable Synth isn't showing up in my list of devices on windows 8 anyhow, and I suspect most people will just give up when they cant find any output devices in my application.
See FAQ #11 at http://coolsoft.altervista.org/en/virtualmidisynth/faq best, James
