I'm looking to buy a digital piano so that I can play around with different instruments (not for recording purposes, although that would be an added benefit). There's two that I'm currently looking at buying secondhand (Casio AP10 or Casio Privia 110), and both seem to have midi in/out ports.
Would I be able to download a cheap/free program onto my laptop and connect that to the digital piano to play basic sounds (e.g. flute, trumpet), with the audio still coming out of the digital piano?
I'm totally new in this area, having only played acoustic piano for years, so any help would be appreciated.