What does the frase centum dei et satyri syringam amabant mean?

Answer 1

centum = a hundred

dei = gods [here referring to the Greek gods]

et = and

satyri = satyrs, the companions of Pan

syringam = shepherd's pipes, made from the hollow stem of the mock orange plant [here in the accusative case]

amabant = they used to love /they used to be fond of/ they used to like

So the entire sentence reads: A hundred gods and satyrs used to be fond of the shepherd's pipes.