Casting iTunes channel to ChromeCast fails from iOS Plex app
I recently bought a ChromeCast Audio and I would like to be able use my iPhone to cast my iTunes music collection to it. When I use the Plex iOS app and select my ChromeCast, the song doesn't play and I eventually get the error message on my iPhone Plex app, "Uh-oh! Something went wrong playing your media. Please try again."
From my Windows 10 Plex server which also hosts the iTunes library, I am able to successfully cast music to the ChromeCast Audio.
From the iOS App, I am able to successfully cast other Plex channels (like PBS or movies not stored in iTunes) to the ChromeCast Audio.
From the iOS App, I am able to successfully play music from the Plex iTunes channel on the phone (i.e. while not casting)
I am using
Plex iOS App 4.16.1
Asus RT-AC66u wireless router
All 3 devices are on the same local network subnet (192.168.0.xxx)
What do I need to do to be able to use the Plex iOS app to cast iTunes music to my Chrome Cast Audio?