Can I use other loudspeakers?

There are a number of ways of adding AirPlay support to non-AirPlay speakers. D-Link’s Music Everywhere can be found online for around £40, although it only supports AirPlay rather than AirPlay 2. Apple’s AirPort Express currently works with AirPlay as well, but Apple hasn’t yet said if it will update the AirPort Express for AirPlay 2 – so you might need to use the latest Apple TV instead.