Yesterday I was doing archeology, and I delved into my collection of cassette tapes to listen to medieval music. On the credits it says, "Medieval and Renaissance instruments sampled by Minotaur Studio and Decor Sonore: krumhorn, chalmie, recorder, lute, harp,..."

What does 'sampled' mean? Are those instruments merely simulated on the tape? If so, how is it done, exactly?