Mark said:

"MidiOx seems to be the favorite. There is another virtual MIDI cable some folk use, but I forget what it is."

Just to be pedantic, Mark, it's Midi-Yoke that provides the virtual ports that, I'm willing to bet, your Midi-Ox is connected to. Midi-Yoke is available at the Midi-Ox site, but it is a separate program. Ox -- yoke -- I get it now!

I use Midi-Ox with the Maple Midi virtual ports, which seem to fit my system a little better. I think the difference mostly that Midi-Yoke's XP support is hardwired to 8 ports, for some reason, while Midi Maple lets you select the number you want, up to 8.

No other major difference, I think.