And Sooloos has an internal database and obfuscated file structure that you must import library and metadata into using Control:xx - Sooloos will not play from a regular file structure and I'm pretty sure it will not play from an iTunes library without first importing the audio files and metadata into its own databases and folders.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).