Well, I did get rtpmidi to work though it took a few hours to figure out how. It didn't seem to do much for the latency, though.

So it occurred to me that maybe the latency I am hearing is the latency of the software synthesizer in each case, since I just have a MIDI keyboard attached and depend on BIAB to echo back the sound. I didn't notice it much when using BIAB for Mac, but with BIAB for Windows it was easily noticeable, about like a 1/16th note in a moderately fast tempo. Is the Apple DLS software synth much faster at starting a sound than the Windows GS synth? Or is it just because I'm running Parallels and a typical Windows PC would be much faster at producing a tone?

Would using an average Windows laptop with BIAB make the keyboard recording sound about as immediate as Mac BIAB on my Macbook Pro?

Thanks,
Bruce