Rikki,
Yes, I agree all it will do is let you play Tyros styles with Live-Styler using XG but non mega sound sets. That's OK as long as it selects a decent substitute. (No dog barks for guitars!)
Since Mega is complex ( all those velocity switched layers etc) I wouldn't expect anything better.
Backus, It could be done, but would not be easy. First you would have to really dig into the mega voices, then try to re-create an equivilent capability. I sure don't have time for it. I don't even have time to create any original styles for my T2 or my PA2.
If someone would create a program that would really do a superb job of converting Yamaha styles (especially Tyros) to PA they would have a great product and sell may of them.
Lee
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Lee S.