I just bought S90XS and so far I'm been overwhelm. Awesome piece.
I'm looking for extra sounds for S90XS, start from free sounds and maybe later I'm ready to buy some. Where do I start looking?
Also, can I plug in my Novation Launchkey 61 Key Midi Controller to USB and use it as extra keyboard for extra sounds?
The USB "To Host" port can only be connected to a computer... So you will need to connect your other keyboard controller either via standard 5-pin MIDI cables or if you wish to communicate via USB you would need to connect both keyboards to the computer and have your software redirect the signal.
The S90 XS can load any Voice (non-user sample) Library for the Motif XS.