Music won't play on Roberts radio

[Hungryhalibut]

I've recently installed Minim on my Synology and it all works fine on my Naim SuperUniti. We also have a Roberts Internet radio in the kitchen, which sees all the albums, genres etc., but when I navigate to an album and press play it says <EMPTY>. An old thread on here mentions special characters and date formats, and that future updates would deal with format issues. The Roberts works fine with the Synology server, so it's not a networking issue.

I hope there's an easy fix. Thanks.