Clif,
I understand your concern, but frankly, I am not surprised. You are comparing recent top of the line "professional" keyboard (which probably cost around $2500) to a $60 program, which is mostly intended for home/practice use. Yamaha has, I am sure, a large team of engineers and almost 20 years of experience designing and making this types of auto-accompaniment systems, whereas JammerLive is a fairly new program, likely written one fresh-out-of -college kid.
I am convinced that JammerLive has more flexibility and probably quicker response to users' comments - so by all means do express your wishes to Soundtrek, but software companies live by issuing continuous updates, whreas the hardware makers ship you a fairly complete and full-featured instrument, but then not supporting it with hardware updates beyond some obvious bug fixes.
Best Regards,
Alex
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Regards,
Alex