1. MusicNotes.com: This website offers a variety of sheet music for different instruments, including flute. You can search for "Palladio" and find several arrangements of the piece for flute, including solo arrangements and versions for flute and piano.
2. Fluteland.com: This website specializes in flute music and offers a variety of sheet music, books, and other resources for flutists. You can search for "Palladio" and find several arrangements of the piece for flute, including solo arrangements and versions for flute and piano.
3. Amazon.com: Amazon sells a variety of sheet music, including for flute. You can search for "Palladio" and find several arrangements of the piece for flute, including solo arrangements and versions for flute and piano.
4. Local music stores: Some local music stores may also carry sheet music for flute, including arrangements of Palladio. You can call or visit your local music store to inquire about the availability of the piece.