To create the sounds that each instrument makes, were the actual instruments on display used or were replicas made?
The sounds were sourced from soundtracks of similar types of instruments being played such as Dale Olsen’s Music of El Dorado and Peyote songs from the Smithsonian’s Folkways Records.
Is this a flute of some kind?
In a way, yes. That is a panpipe of Nasca origin. Unsurprisingly, it was played by blowing through the holes into different length tubes, which created different tones.