Jazzmammal - I think I understand what you are saying. Why, though, if BIAB usually puts its melody track on channel 4, should I not be able to simply set my alto sax (or any other instrument) to channel 4 and hear the melody? That didn't work for me before, and now I am trying different channels for my alto sax in JABB while keeping the BIAB melody channel set to 4 in the hope I will hear the melody line. Or, should I try an oddball, unused channel like 20 and set both BIAB melody and JABB alto sax to that?

Another question - why is Real Band more appropriate for JABB than BIAB is? What does the ability to use multiple synths have to do with the issue? Does JABB work perfectly with Real Band?

Finally, isn't this a question for PG Music? I mean, they sell both JABB and Personal Orchestra right on their website, presumably for use with BIAB? Has anyone contacted them directly about this? Maybe there is a bug in BIAB, or maybe it is a simple matter of getting PG Music to have a special JABB listing under synth/soundcard rather than "General Midi Misc." that one could choose that would send the signals on the proper channels.

Thanks, everyone, again for helping me figure this out. It seems to me there is no reason at all that these two programs should not work together.