I've been importing songs from iTunes onto my Xperia XZ using Xperia Companion (Windows 10). It's the fastest way to import songs so far, but there are always songs which are missing from some of my playlists.
As I go through the playlists, it seems that songs containing the ampersand (&) symbol cannot be imported by Xperia Companion (e.g. CHAGE & ASKA). Once I rename them to say, "CHAGE and ASKA", they gets imported fine. I have tens of thousands of songs in my iTunes library and I don't imagine myself renaming songs and artists little by little. It might have been just a simple software bug importing playlists from the XML ?
Can you please look into it and hopefully release an update ? Thanks.