I own some top notch Eastwest and Yellow Tools libraries. Believe me, when it comes to samples, nothing can beat these guys. The libraries are simply amazing and I often brag about them (can't help it ).

I have no idea how I could convert these sounds to Tyros format. That would be cool, but I suppose it's not easy. I have a Tyros 2. I also think that by converting the sounds, I would be breaking copyright laws, although not sure.

Think about it, if that could be done, Yamaha , Korg etc would have done it already and resell the sounds as expansion samples for their keyboards.